When Ph.d.s get frustrated

June 3rd, 2007 · 115 comments

Says Dave in New York City: “I love that this note contains a fairly detailed explanation of Lord Kelvin’s formulation of the second law of thermodynamics….and a helpful diagram!”

ATTENTION: Please do not run the a/c with the window open.

Complete with unnecessary diagram

related: When you get down to it

FILED UNDER: "helpful" advice · college life · It's science! · most popular notes of 2007 · temperature · TL;DR · visual aids


115 responses so far ↓

  • #1   Rigby

    That’s truely the best. I love the diagram.

    Jun 3, 2007 at 5:34 pm   rating: 65  small thumbs up

     
  • #2   TTFK

    So he’s a PhD, and he makes a drawing of hot air FALLING?

    Jun 3, 2007 at 6:06 pm   rating: 233  small thumbs up

    • #2.1   Rakesh

      Very good observation indeed.

      Feb 24, 2008 at 10:48 pm   rating: 9  small thumbs up

       
    • #2.2   jelloegg bang

      I think he’s trying to show that the hot air is supposed to be going “outside.”

      Jul 3, 2008 at 3:09 pm   rating: 30  small thumbs up

       
    • #2.3   db

      Obviously, this AC unit is just over a WINDOW. The point is, if the window is OPEN, the hot air comes back in the window (which, remember, is below the AC unit).

      Jul 10, 2008 at 5:39 am   rating: 59  small thumbs up

       
    • #2.4   pbigtime

      Ever heard of the venturi effect?

      Jul 24, 2008 at 3:16 pm   rating: 16  small thumbs up

       
    • #2.5   Claire

      Somehow, as soon as the Ph. D. graduate crosses the stage and they place the actual diploma into hir/her derserving hands, something has to the common sense portion of the brain….

      Jul 26, 2008 at 8:27 pm   rating: 18  small thumbs up

       
    • #2.6   Sarah

      He’s showing that the hot air from the a/c unit is being sucked back into the open window.

      Aug 13, 2008 at 6:07 pm   rating: 39  small thumbs up

       
    • #2.7   D

      The hot air is not falling, it’s being sucked in through the window. Heat does rise, yes, but it also travels to where there is less of it, like inside the apartment where the cold air is blowing…

      Sep 26, 2008 at 2:53 pm   rating: 114  small thumbs up

       
    • #2.8   Mortal Light

      For all we know, they could have had a PhD in literature…

      Dec 24, 2008 at 3:36 am   rating: 49  small thumbs up

       
    • #2.9   Steven

      Heat can travel down. It depends on the type of heat – conduction, convection or radiation.

      Mar 19, 2009 at 5:54 am   rating: 13  small thumbs up

       
    • #2.10   Bocefus

      Aug 4, 2009 at 3:50 pm   rating: 2  small thumbs up

       
    • #2.11   Bocefus

      Aug 4, 2009 at 3:53 pm   rating: 1  small thumbs up

       
    • #2.12   Bocefus

      Aug 4, 2009 at 3:54 pm   rating: 0  small thumbs up

       
    • #2.13   Vickie

      I think he’s only pointing to the direction of the hot air traveling into the room, rather than the air rising and falling based upon temperature.

      Oct 13, 2009 at 5:06 pm   rating: 7  small thumbs up

       
     
  • #3   Catsoup

    Pfft. I’d be more impressed if he’d used blue ink to indicate the cold air.

    Jun 3, 2007 at 6:51 pm   rating: 159  small thumbs up

    • #3.1   kaylyn

      lmao

      Apr 6, 2008 at 12:17 am   rating: 1  small thumbs up

       
    • #3.2   Charby

      Why would he use blue to indicate cold air? In physics, red means cold, blue means hot.

      Jul 13, 2009 at 2:54 pm   rating: 21  small thumbs up

       
    • #3.3   Mark bang

      Only when you’re a pedantic asshole. It is true that blue light has a shorter wavelength and more energy than red. But pretty much everyone associates blue with cold and red with hot. Blue = ice/snow. Red = fire.

      Jul 13, 2009 at 3:26 pm   rating: 80  small thumbs up

       
     
  • #4   Artorios

    Hahaha

    Jun 3, 2007 at 7:26 pm   rating: 2  small thumbs up

     
  • #5   Anhoni

    All he had to say was “Don’t run the A/C with the window open, it wastes electricity.”

    Jun 3, 2007 at 8:02 pm   rating: 9  small thumbs up

    • #5.1   Rob

      Well done. You spotted the joke. It’s funny because he wrote more than he needed to.

      Feb 23, 2009 at 7:14 pm   rating: 112  small thumbs up

       
    • #5.2   Seth

      Good one Rob. A passive agressive comment on a website about passive agressives. I don’t see those much in the comments.

      Feb 28, 2009 at 2:47 am   rating: 85  small thumbs up

       
     
  • #6   Mark Davis

    this note isn’t passive aggressive. it has a specific request and logical rational reasons.

    Jun 3, 2007 at 8:47 pm   rating: 50  small thumbs up

    • #6.1   Qoheleth

      “passive agressive note” and “specific request with logical rational reasons” are not mutually exclusive categories.

      Jul 14, 2008 at 5:26 pm   rating: 37  small thumbs up

       
    • #6.2   Claire

      Durn, Mark Davis! You be vury smart…! :-)

      Jul 26, 2008 at 8:28 pm   rating: 0  small thumbs up

       
    • #6.3   Claire

      Actually, Mr. Davis, I think what makes it a passive-aggressive note is the time and anal retentive dedication the artist used to create not just a note, but a visiual for those who are more stupid than he/she….

      Jul 26, 2008 at 8:30 pm   rating: 20  small thumbs up

       
    • #6.4   Shawn Lower

      Actually, I’d say that it’s a simple request with a logical argument to support it. Humans are more prone to follow instructions if they understand *why*.

      Problem: It’s hot. The A/C isn’t sufficient.
      Logic: Opening the window will help cool the room.
      End result: Window is opened (w/ A/C on).

      Problem: It’s hot. The A/C isn’t sufficient.
      Idea: Opening the window w/ A/C on will make it hotter.
      End result: Window is left closed, or A/C is turned off.

      Thus, the argument succeeds.

      On a separate note, I’m confused. This is a window air-conditioner. In my experience, opening the window w/ the window A/C in place causes the unit to fall out, ripping the plug out violently in the process, before falling 12 stories and obliterating a small elderly woman with a dog in a miniature urban-tunguska event. Hypothetical experience, I mean. I’ve gotta go.

      Apr 12, 2009 at 11:51 am   rating: 168  small thumbs up

       
    • #6.5   steady

      Shawn Lower’s comment made me laugh more than any other

      May 19, 2010 at 7:02 am   rating: 12  small thumbs up

       
     
  • #7   Suzi

    Okay, I’ve been reading this web site obsessively since I stumbled upon it a week or so ago, and this is my favorite one so far. Brilliant.

    Jun 3, 2007 at 9:26 pm   rating: 3  small thumbs up

     
  • #8   Jordan

    Mark Davis is right, in the end.

    Jun 3, 2007 at 10:16 pm   rating: 1  small thumbs up

     
  • #9   andyfox1979

    truly a scientist.

    Jun 3, 2007 at 10:31 pm   rating: 0  small thumbs up

     
  • #10   Adam

    Absolutely the best PA note thus far. Let’s start a ‘note of the week’ or something here :)

    Jun 4, 2007 at 12:14 am   rating: 1  small thumbs up

     
  • #11   babychaos

    I reckon Mark Davis wrote the note.

    Cheers

    BC

    Jun 4, 2007 at 11:52 am   rating: 2  small thumbs up

    • #11.1   Butley

      Well spotted. The handwriting is similar to the condom-in-the-toilet note.

      Dec 21, 2009 at 1:58 pm   rating: 1  small thumbs up

       
     
  • #12   Michael

    The room won’t necessarily get hotter. If the cold air blown into the room minus the hot air generated by inefficiencies in the unit is greater than zero then you have a net decline in heat. It doesn’t matter that the A/C blows hot air outside because that shouldn’t effect the temperature inside. It could make a difference if there’s a constant draft going into the room that draws all the heat from the unit in with it but that probably doesn’t happen too often. It still wastes a lot of electricity though. Blowing a fan over a bucket of cold tap water would be a lot more efficient.

    Jun 4, 2007 at 12:03 pm   rating: 6  small thumbs up

     
  • #13   phampants

    i’m glad ph.d. students have so much time

    Jun 4, 2007 at 12:48 pm   rating: 11  small thumbs up

     
  • #14   Veritas

    Am I mistaken or did he spell it vary instead of very?

    Jun 4, 2007 at 12:52 pm   rating: 0  small thumbs up

    • #14.1   wiccan31576 bang

      naw, it’s just a flat bottom e. I write mine like that.

      Jun 12, 2008 at 1:32 pm   rating: 1  small thumbs up

       
     
  • #15   jane

    Best one so far….

    Jun 4, 2007 at 6:21 pm   rating: 0  small thumbs up

     
  • #16   V

    hmmm…hard to determine whether this is P-A or just plain TMI. Sometimes, it’s best to just say what needs sayin’ (like Anhoni stated), without the lesson.

    Jun 4, 2007 at 6:58 pm   rating: 0  small thumbs up

     
  • #17   kat

    i love this one. the best so far!

    Jun 5, 2007 at 2:33 am   rating: 0  small thumbs up

     
  • #18   Sharkie

    This is the best post on this site!

    Jun 8, 2007 at 12:28 pm   rating: 0  small thumbs up

     
  • #19   Velly

    The hot air probably _would_ travel in direction of the open window because the temperature inside the room would be cooler than the temperature outside. Heat always moves to achieve equilibrium — to eliminate “cold”.

    Jun 26, 2007 at 3:39 pm   rating: 12  small thumbs up

     
  • #20   Matthew

    Neat, cool lesson.

    Jun 26, 2007 at 4:12 pm   rating: 2  small thumbs up

     
  • #21   Chak

    You dont need a PhD to explain that, a B.S. (bullsh*t) degree would do just fine :P.
    He also completely ignored the fundamental fact that hot air rises. I’d question where he got his PhD from.

    Jun 26, 2007 at 7:03 pm   rating: 2  small thumbs up

    • #21.1   Claire

      Perhaps one of those Internet universities…

      Jul 26, 2008 at 8:33 pm   rating: 0  small thumbs up

       
     
  • #22   msquared

    Ph.D = piled higher and deeper

    Jun 26, 2007 at 7:27 pm   rating: 4  small thumbs up

     
  • #23   ned

    copied almost word for word from the howstuffworks.com air conditioning article.

    Jun 27, 2007 at 2:07 am   rating: 3  small thumbs up

     
  • #24   Marc

    I do not see this as a passive-aggressive note. He may or may not be 100% correct, but he follows a logical reasoning and makes fair efforts to convince the reader to reach the same conclusion, he’s just being assertive which is completely OK.

    Jun 27, 2007 at 4:58 am   rating: 3  small thumbs up

    • #24.1   Claire

      Hmmm…I love it when a Ph. D. gets assertive and miffed…makes him look…sexy! Or brtings out her inner glow….

      Jul 26, 2008 at 8:34 pm   rating: 3  small thumbs up

       
     
  • #25   Webmaster X

    “Michael // Jun 4, 2007 at 12:03 pm

    The room won’t necessarily get hotter. If the cold air blown into the room minus the hot air generated by inefficiencies in the unit is greater than zero then you have a net decline in heat. It doesn’t matter that the A/C blows hot air outside because that shouldn’t effect the temperature inside. It could make a difference if there’s a constant draft going into the room that draws all the heat from the unit in with it but that probably doesn’t happen too often. It still wastes a lot of electricity though. Blowing a fan over a bucket of cold tap water would be a lot more efficient.”

    Boy you sure don’t have a fucking clue what you are talkingabout.

    Jun 27, 2007 at 5:17 am   rating: 7  small thumbs up

     
  • #26   Rickyp

    Why is this by a Ph.D.? Anyone who has taken an undergrad course in thermodynamics would understand this principle. I would be inclined to say that no engineer with a Ph.D. would be doing justice to his argument without mentioning entropy. The net increase in entropy makes the process irreversible and thus a greater quantity of energy than that which is removed from the air entering the room is released into the atmosphere, meaning that if that exhausted air were to enter the room, the total energy in the room would increase. As far as the hot air falling thing is concerned, the difference in pressure between inside and outside is what controls the movement of air more than convection in an open system like this. If the inside is cooler, then there will be a pressure drop outward through the window and the air will tend to flow outward, expelling cold air and replacing it with whatever is in the hallway or reaching a dynamic equilibrium with the outside. Alternately, if it tends to be warmer inside then the air from outside will be sucked inside by the pressure difference, pulling in the hot exhaust and lowering the pressure further and pulling in more hot exhaust until the room is the same temperature as the hot exhaust. Buildings are normally not warmer than the atmosphere (unless it’s a greenhouse or a sauna). Thus, even with the window open one needs not worry too much about the exhaust, that is unless the prevailing winds blow air into the building or perhaps if the wind creates a vacuum on another face of the building (wind blowing perpendicular to a wall with a number of open windows). In general, with such a large system, convection has nothing to do with how the heat flows. But again, I doubt this was a Ph.D., since there is no mention of entropy, and anyone who knew a lot about how heat pumps work (at least anyone who has completed at least a year and a half of chemical engineering coursework) would not be doing the argument justice without mentioning entropy.

    Jun 27, 2007 at 5:40 am   rating: 18  small thumbs up

    • #26.1   Claire

      Do what???

      Jul 26, 2008 at 8:36 pm   rating: 6  small thumbs up

       
    • #26.2   Ray

      I agree with you that there’s no need for a PhD…. anyone who’s taken an undergrad course in physics or chemistry knows that. But no need to mention entropy (word only known engineers) to explain the laws of thermodynamics perfectly. And telling that no buidling’s warner than the atmosphere proves that you sure don’t have a degree in civil engineering, because that’s a false allegation. And saying that “In general, with such a large system, convection has nothing to do with how the heat flows” shows that YOU are a littleignorant on the subject, or that you haven’t correctly done your homeworks !

      Aug 11, 2009 at 5:25 pm   rating: 0  small thumbs up

       
     
  • #27   SirOJ

    @Rickyp… you’re an ass… nobody cares you know.

    Ned was spot on: copied form howstuffworks.com

    Jun 27, 2007 at 5:54 am   rating: 3  small thumbs up

     
  • #28   Levi

    Rickyp is not an ass; he’s clarifying for a lot of the people here who seem to have stopped thinking about science in elementary school. “What an idiot, hot air rises man!!!!” . . .

    Another ironic thing is that people here seem to be anti-knowledge, as if they are the hall monitors for the school of dunces. First the note was attacked and now Rickyp. Perhaps the world would be a better place if more people sought understanding of and explanations for things instead of taking things straight from the horse’s mouth.

    Jun 27, 2007 at 8:42 am   rating: 21  small thumbs up

    • #28.1   Claire

      While I did not read it word for word, I do appreciate Rickyp bringing up a few salient points–and I think he certainly has the right to add relevant, clarifying comments.

      But let’s face it, someone who is leaving a window open while running an airconditioner would best be served by a large poster-sized sign with the following all in block letters: ‘DO NOT LEAVE WINDOW OPEN WHEN AIR CONDITIONING IS RUNNING. THANK YOU!”

      Jul 26, 2008 at 8:40 pm   rating: 8  small thumbs up

       
    • #28.2   me no dim

      …with a preface of “Uh, Hellloooooo!!!”…

      Dec 7, 2008 at 1:59 am   rating: 8  small thumbs up

       
     
  • #29   Fuck You

    Dear asses:

    The request is perfectly reasonable. PhD students’ time is cheap because society does not value original thought and the wages reflect this.

    Hot air gets sucked into a vacuum, whether it is a literal vacuum (pressure out of equilibrium) or a figurative vacuum (order tends to disorder, as we all observe daily).

    Whoever is running A/C with a window open would probably fit right in with the comments. How fucking stupid do you have to be to do this? It’s like trying to carry water in a sieve.

    Please do your part to control the population explosion, and kill yourself. Thanks!

    Jun 27, 2007 at 8:54 am   rating: 26  small thumbs up

    • #29.1   uhhhhh bang

      hahaha, i like this one lol

      Nov 12, 2008 at 7:05 pm   rating: 0  small thumbs up

       
     
  • #30   me

    Anhoni: all you had to say was nothing.

    Jun 27, 2007 at 9:32 am   rating: 0  small thumbs up

     
  • #31   Mantra

    Sound like any engineer. Most PhD’s aren’t that practical – even the one’s in engineering. As an engineer, believe me, dealing with numerically and scientifically illiterate (90% of US population) is very trying at times.

    Just yesterday they had Fox news on in the customer cafeteria I was visiting and the dorkbot on the show was looking at a straw poll of Hillary-vs.-McCain which stated that 46% Hillary – 43% McCain with 8% margin of error, and yet the idiot was claiming conclusions from the numbers. Don’t worry I won’t derive confidence intervals and random chance, but the numbers made it self-evident that nothing at all could be concluded. Anyone with a high school diploma should have got that. News is about things that rarely happen – most of the time there is no news. It’s a bad business model which is why we have infotainment instead.

    Jun 27, 2007 at 10:03 am   rating: 24  small thumbs up

    • #31.1   sublime

      You know what else is equally annoying? When arrogant and uninformed scientists attempt to create a coherent argument about social or political matters. You’re by no means the worst offender, I should definitely say.

      I won’t bother getting into it, but it sure is trying. Oh, and let me guess, it’s purely the omission of the margin of error and _not_ the fact that you like McCain / conservative party. Sure, I believe you ; )

      Yes! I have completed my own p-a note! w00t!

      Feb 24, 2008 at 8:30 pm   rating: 2  small thumbs up

       
    • #31.2   Claire

      I am not a Ph. D., but have a couple of post-graduate degrees. It IS frustrating dealing with the general public…The worst offenders are the ones who CHOOSE to be ignorant…

      Jul 26, 2008 at 8:43 pm   rating: 4  small thumbs up

       
    • #31.3   Kath

      Sublime, what are you talking about? How on earth could you draw conclusions when the margin of error is bigger than the difference between results? It has nothing to do with whether you like McCain or not. I hate McCain and Republicans. Did you actually think about what you wrote??

      Dec 11, 2008 at 11:27 am   rating: 13  small thumbs up

       
     
  • #32   anonymoustroll

    Someone should remind the good doctor that PhDs are very similar to air conditioners running next to a open windows.

    Jun 27, 2007 at 11:05 am   rating: 3  small thumbs up

    • #32.1   anonymousliterate

      Someone should remind the good troll of the basic rules of grammar.

      May 9, 2009 at 10:20 pm   rating: 13  small thumbs up

       
     
  • #33   Bulbboy

    Is this why politicians who blow hot air all the time are ineffective when speaking outside?

    Jun 27, 2007 at 5:56 pm   rating: 11  small thumbs up

     
  • #34   xian

    Most of these notes, while funny, are not passive-aggressive, unless we are redefining the term (see also ‘ironic’), but to mean… what?

    Jun 27, 2007 at 11:50 pm   rating: 0  small thumbs up

     
  • #35   LK

    i think this note is passive aggressive. the guy went into a completely unnecessary explanation with a completely unnecessary diagram, hinting that he thinks (sarcastically or not) that his roommate is extremely stupid. i think this makes it PA. if he had just said “hey don’t run the AC with the window open” then it certainly wouldn’t have been PA.

    Jun 29, 2007 at 6:18 pm   rating: 2  small thumbs up

     
  • #36   conformist_panda

    Writing: “Please do not run the air conditioner with the window open. You are killing the planet! (plus God kills a kitten.)” would be better, don’t ya think?

    Jun 29, 2007 at 7:32 pm   rating: 3  small thumbs up

     
  • #37   RaggDolly121

    He explains things too often.

    Jul 2, 2007 at 2:11 pm   rating: 0  small thumbs up

     
  • #38   Jeff

    So he’s a PhD, and he makes a drawing of hot air FALLING?

    Actually, the hot air is not falling, it is being sucked into the window by the displacement of warm air inside the room… And I only hold a bachelor’s degree… In THEATRE! hehehehehe

    Jul 2, 2007 at 6:44 pm   rating: 7  small thumbs up

    • #38.1   ChemEng

      So far, nobody has said a thing about where the air input of the A/C is located (and it does not appear in the drawing), which in the end would be more important to the air flow than whether the window is open or closed.

      * If the air input is located INSIDE the room, the hot air expelled will ascend, and problem solved (unless the air currents outside tend to drive the air into the room). This is usually the way A/C’s are designed, because it makes it more efficient, since the air input would be increasingly cold, requiring less “effort” to “remove heat” from it.

      * If the air input is located OUTSIDE, I hope the designers put it UNDER the hot air OUTPUT. This would also create a pressure differential between the room (higher pressure because of the new air continously flowing) and the outside (lower pressure because of the air being sucked). Thus, the hot air could NOT come in. Yes, the cold air would go OUT, causing the same inefficiency, but because of different reasons.

      * If the air input is INSIDE the room, but at the BOTTOM, it might suck SOME of the hot air output, but nothing to be worried about, because of the tendency of hot air to ascend.

      I will also say that I do not agree with the author’s claim that leaving the window open would eventually make the room hotter; it would just convert the A/C into a fan, since the heat “removed” from hot air input would ALMOST equal the heat “summed” to the output (of course, enthropy would play a roll here, but hopefully none to be noticed as a “warmer room”.

      In any case, yes, keep the window closed. But not because the hot air flows down (what would balloon designers say?) and in; just because it makes the system more efficient.

      Ah! And I’m not a Ph. D; just a Mexican Chemical Engineer.

      Jan 15, 2009 at 2:44 pm   rating: 7  small thumbs up

       
    • #38.2   GhostWriter bang

      Mexican Chemical Engineer” ?
      That’s just a fancy name for a crack cooker.

      Mar 19, 2009 at 9:14 am   rating: 4  small thumbs up

       
     
  • #39   Jeff

    Whoever is running A/C with a window open would probably fit right in with the comments. How fucking stupid do you have to be to do this? It’s like trying to carry water in a sieve.

    Actually, I carry “water” in a “sieve” all the time. Its called a bank account.

    Jul 2, 2007 at 6:46 pm   rating: 7  small thumbs up

     
  • #40   johnO

    I dunno, I think you give the guy too much credit by calling him a PhD. There’s some questionable stuff in his “science”/reasoning.

    But who has heard of a window with an A/C unit that can open??? This one gives me a BS-alert impulse.

    Jul 2, 2007 at 11:18 pm   rating: 1  small thumbs up

     
  • #41   ThatGuy

    I am smarter due to this note and I appreciate the sharing of such knowledge!

    Jul 11, 2007 at 7:41 am   rating: 9  small thumbs up

     
  • #42   Midlife Crisis

    If you wish to leave the window open, then the air conditioner should be reversed so it blows the cold air outside and the hot air inside. The cold air falls, mixing with fresh air, and then is drawn back into the room by the mild temperature gradient and stays close to the floor. Inside, the hot exhaust air rises quickly to the ceiling, forcing the cooler air down to where people are working. However, one must be careful not to over-cool the room because, depending on the relative humidity, ice may start to form on computer monitors and other electronic equipment causing an electrical hazard and subjecting workers to potential hypothermia.

    Jul 16, 2007 at 6:52 pm   rating: 6  small thumbs up

     
  • #43   N8tiv tung

    Bulbboy #39 This is part of the reason. Actually, most politicians are ineffective regardless of location, because they both suck AND blow. Administrators, too (although the two are not much different in basic composition).

    Jul 17, 2007 at 8:36 pm   rating: 1  small thumbs up

     
  • #44   Jill

    Methinks I should have written a diagram like this for my husband, who often is guilty of leaving windows open while the AC is on. Of course, I have no such knowledge of which way different temperatures of air flow…my reasoning is that it’s too damned expensive to air-condition all of VA (which is what he’s doing when he doesn’t bother to contain that pricey cold air in our home).

    Now, where’s a note from someone who is tired of roommate/spouse running the AC when it is less than 50 degrees outside? THAT’S one I can’t wrap my brain around, either.

    Jul 18, 2007 at 10:25 pm   rating: 6  small thumbs up

     
  • #45   Zelda

    God I wish I could sneak a camera into my lab…I can’t think of a place more full of passive aggressive asocial weirdos. They put notes on EVERY piece of lab equipment. It’s like no one can communicate verbally… the signs in the bathroom are priceless. I may have to risk my job to document the insanity because it is just too good.

    Jul 24, 2007 at 2:47 pm   rating: 9  small thumbs up

     
  • #46   jane

    i’m going to print this out. my roommates always leave the windows open with the AC on.

    Jul 30, 2007 at 9:19 am   rating: 2  small thumbs up

     
  • #47   Mishee bang

    I’m going to comment on this just so it hopefully goes up to the “Stirring Up Trouble” – I want to see what our current gang of troublemakers can say about this post…

    The diagram reminds me of my dad!

    Oh, and that cold air is fucking delicious!

    Nov 8, 2007 at 6:50 pm   rating: 1  small thumbs up

     
  • #48   Jodi Blaze

    Doctor Doctor, Give me the news
    I gotta bad case of drawing things

    Nov 28, 2007 at 5:13 pm   rating: 2  small thumbs up

     
  • #49   Chrissie

    The rules of air conditioning should be started in the by-law process. I have a similar problem, too.

    Dec 7, 2007 at 12:53 pm   rating: 0  small thumbs up

     
  • #50   Nichole

    I Don’t Know What I Can do to tell my Parent’s that I need my own Computer and I don’t Have Not enght of Money to by it and I Don’t Know What I Elease to Tell them. From your friend Mida Nichole

    Dec 24, 2007 at 11:35 am   rating: 0  small thumbs up

     
  • #51   dsfkjdf;kjf;lkj

    did no one notice the hair stuck in the piece of tape on the note? ewwwww …

    Jan 6, 2008 at 12:26 pm   rating: 1  small thumbs up

     
  • #52   sir jorge

    i’d shove that paper in that phd’s mouth.

    Apr 23, 2008 at 6:52 pm   rating: 0  small thumbs up

     
  • #53   Cricket

    Dear Stupids,

    if you’re gonna run the A/C, keep the window closed.

    -Me

    Jun 12, 2008 at 2:31 pm   rating: 1  small thumbs up

     
  • #54   Cricket

    picture pages, picture pages!
    time to get your picture pages!
    time to get your crayons and your pencils!

    picture pages picture pages!
    open up your picture pages!
    time to watch this psycho
    do a picture page with you!

    Jun 12, 2008 at 2:36 pm   rating: 1  small thumbs up

     
  • #55   db

    Also, someone want to translate this into Italian and post it on the Italian Regional trains? Each window has a huge sign saying the cabin is air-conditioned. No matter how nice and cool and refreshing it is in the cabin, some IDIOT always comes on and opens a window. I had my first real, sparks-flying argument in Italian over this. It was great! lol

    Jul 10, 2008 at 5:42 am   rating: 3  small thumbs up

     
  • #56   Aww... Crapsticks

    Firstly, the guy never called HIMSELF a Phd so all the “he ain’t so friggen smart” angst is a little unwarranted.
    Secondly, this IS a passive aggressive note in it’s highest form- the key is in the subtle aggro.
    Thirdly, I must be right in my assertions because I am making my points sequentially and starting them with linear numerical value. So you know I’m a clever fuck.

    Jul 17, 2008 at 10:38 am   rating: 6  small thumbs up

    • #56.1   kthxbai

      “Firstly, the guy never called HIMSELF a Phd so all the “he ain’t so friggen smart” angst is a little unwarranted.”

      I was going to bring up this point too. Everyone seems to be acting like… “how did this guy get a phd?”and “For having a phd, this guy is stupid,”
      but I think the title of this was meant to be a joke. Nowhere does it actually say that this guy REALLY has a phd.

      I think this guy is definitely weird and probably thinks he’s smarter than he is, but at the same time I also think he’s probably a good guy with good intentions who wanted to go through the trouble of explaining his point so as to not just sound like a commanding asshole.

      Obviously there are probably more efficient and logical ways of doing this but I’m on team phd.

      Can I still laugh at him if I’m on his team?

      Aug 31, 2008 at 1:19 am   rating: 9  small thumbs up

       
     
  • #57   jimoser

    Where I come from, if you open the window the A/C unit falls out crushing the unsuspecting students below. I’m not sure if that makes the room any warmer. Perhaps a diagram could could answer the perplexing question.

    Aug 11, 2008 at 2:41 pm   rating: 17  small thumbs up

     
  • #58   SMF

    Actually if that is a powerful enough AC unit it will Positivly pressurize the room and no air will come in that window.. Just like a Hospital Isolation room

    Aug 26, 2008 at 11:44 am   rating: 1  small thumbs up

     
  • #59   chipmunk

    A friend sent me this link… I guess people (my friend included) have way too much time in their hands to the point that actually can waste it to read these threads and comment on it… despite my remark, I could not resist leaving a comment… LOL :P

    Get an hobby, or a life… whichever you prefer! ;D

    Sep 9, 2008 at 11:57 pm   rating: 1  small thumbs up

     
  • #60   the nerd’s guide to passive-aggressive behavior

    [...] related: when ph.ds get frustrated [...]

    Dec 15, 2008 at 12:29 pm   rating: 0  small thumbs up

     
  • #61   Claire de Lune

    I don’t have a PhD, but I DO know that you DONT run the a/c with the window open. You don’t need to draw me a picture.

    Dec 25, 2008 at 1:35 pm   rating: 2  small thumbs up

    • #61.1   numba-1-stunna

      I also don’t have a PhDizzle, but I actually didn’t know that it was such a horrible idea to run the a/c with the window open. Even after reading the note I was a little confused and unsure, but the picture definitely helped. Some people understand better with pictures and diagrams rather than a bunch of boring words on a page. It was very considerate of that person to include the picture.

      Feb 19, 2009 at 9:07 pm   rating: 9  small thumbs up

       
     
  • #62   Jamey

    But warm air rises. So the drawing is inaccurate: If the a/c unit is top-mounted, the “very hot air” exhausted would not magically drop down and reenter the room. Thus, the net effect really has little to do with the air exchanged by the a/c; it’s more a result of the temperature differential between the room and outside.

    Jan 12, 2009 at 4:29 pm   rating: 0  small thumbs up

     
  • #63   sausage shaped, but lumpy

    [...] when ph.d.s get angry extra credit: mcsweeney’s open [...]

    Jan 21, 2009 at 1:50 am   rating: 0  small thumbs up

     
  • #64   Gillian

    I read through almost all the comments, getting more and more perplexed til I got to #67 and #67.1, which said *exactly* what I was going to say — that the “ph.d” is just in the cute little title/caption *about* the note, not IN the note, so who the hell knows if the guy finished kindergarten?

    And I vote for Good Intentions. I think the guy (or female — why does it have to be a guy? this is pretty much the exact note I would leave, and I’m not a guy) is probably mad as hell because every time s/he comes home, the a.c. is going full blast and the window is wide open and the place is hot as hell inside.

    This nicely diagrammed note is probably the fifth version at least. The first version most likely said, “HEY YOU BRAINLESS ASSHATS WTF DID YOU DO WITH YOUR BRAINS?!?! MAYBE YOU FRIED THEM IN THIS MIND-INCINERATING HEAT?? WHEN THE A/C IS ON, KEEP THE WINDOW CLOSED!! HOLY MOTHER OF DUH!!!!!!!!” And then s/he thought that might not be so effective, and s/he gradually toned the note down until s/he got to this version, which is actualy polite as hell, considering the alternatives, which would be a shotgun or an eviction notice.

    .02 :> *shrug*

    Feb 9, 2009 at 8:29 pm   rating: 16  small thumbs up

     
  • #65   Janelle Holden

    This is a classic case of logic getting in the way of impulsiveness. Awesome site!

    Mar 5, 2009 at 6:56 pm   rating: 2  small thumbs up

     
  • #66   Susie_Paloosie

    People! You are all missing the obvious. Read #66!

    #66 jimoser

    Where I come from, if you open the window the A/C unit falls out crushing the unsuspecting students below. I’m not sure if that makes the room any warmer.

    Mar 21, 2009 at 6:06 pm   rating: 1  small thumbs up

     
  • #67   mike

    are you assuming this person’s a doctor because they understand the basic concept behind how a window unit works?

    i understood this in middle school when my dad explained it to me, and HE barely made it out of high school.

    it’s really not that hard.

    (is posting a passive aggressive note about a passive aggressive note postmodern?)

    Apr 26, 2009 at 4:26 pm   rating: 2  small thumbs up

     
  • #68   COURTNEY

    Amazing. I love the diagram.

    Jun 15, 2009 at 2:21 pm   rating: 0  small thumbs up

     
  • #69   vapor cigarette

    I thought it was a great note, and not all that passive aggressive, unless you consider the underlined portions. I think it was very charitable on his/her part to think his/her room mates could even read.

    Aug 9, 2009 at 3:06 pm   rating: 1  small thumbs up

     
  • #70   niamh

    why do most of the comments assume it’s a “he”?

    Aug 10, 2009 at 6:25 pm   rating: 5  small thumbs up

     
  • #71   BoozeInMyBlood

    im 87.6% positive that Ronald E. Dahlgren wrote that lil gem. He fancies himself quite the artist.

    Sep 19, 2009 at 4:59 pm   rating: 0  small thumbs up

     
  • #72   I’m sure you guys can deal | PassiveAggressiveNotes.com

    [...] When Ph.d.s get frustrated [...]

    Mar 22, 2010 at 8:49 pm   rating: 0  small thumbs up

     
  • #73   Flowchart: "Hey, look! A coffee pot!" | PassiveAggressiveNotes.com

    [...] When Ph.Ds get Frustrated [...]

    May 13, 2011 at 9:04 am   rating: 0  small thumbs up

     
  • #74   Hmm, maybe a diagram would help? (Or a spoonful of sugar?) | PassiveAggressiveNotes.com

    [...] related: The Ph.D’s approach to air conditioning units [...]

    Jun 14, 2011 at 9:57 pm   rating: 0  small thumbs up

     

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