Dear Mitt: I thought you would know this, but here's why airplane windows don't open.
(DUers: I finally realized that I/we are dealing with an infantile personality.)
Mitt: The reason airplane windows don;t open is twofold.
1. The air noise would be horrific. You'd never be able to hear the sound on the movie.
Or the PA announcements.
This is the explanation I think you're most able to understand, so I put it first.
2. OK, this one involves aerodynamics and physics, so it will take a little more concentration on your part.
Aerodynamics is all about what makes an airplane fly and what happens to it, both inside and outside, when it does.
Physics is about why and how the physical world works.
Remember Newton and the apple?
Yeah, like that.
An airplane's inside air is pressurized. That means that it's kept at a higher pressure than the outside air. I won't try to explain how. it just happens. Trust me.
Why? Because as you get higher the outside air gets 'thinner' and there's therefore LESS oxygen in it. So you have to keep the inside air 'thicker' with more oxygen in it. Otherwise you'd pass out from lack of oxygen. It's a big word...'hypoxia'', but you don't have to remember that.
Until you get to about 10.000' you're OK with outside air. It's thick enough. But ABOVE 10,000' the air starts to get thinner so that's why they pressurize the inside air to make it thicker.
OK?
NOW...if you should open a window at say 35,000 feet ALL the INSIDE high pressure air would try to get OUTSIDE, and all the OUTSIDE air would try to get INSIDE.
Right away you'd notice that you couldn't hear the movie any more. And any papers you had out and your laptop would go with the inside air, OUTSIDE.
Bummer.
This is called an "EXPLOSIVE DECOMPRESSION".
And that's a bad thing.
If you're the guy who rolled down the window you'd probably lose a body part, or be sucked out of the airplane, if you didn't have your seat belt fastened.
That's why it's always a good idea to have your sea belt fastened.
Just in case you're on an airplane where the windows roll down.
= new reply since forum marked as read
where the villain got sucked out of an open airplane window or door? Anyway, that's how I knew what would happen.
Rmoney's explanation is stupid.
A Boeing 737 belonging to defunct Aloha Airlines had a hole rip open in its fuselage mid-flight. A flight attendant was sucked out of the plane to her death. 
&ExactW=620
Someone around here has posted a link to the scene when he gets sucked out.
BTW, in my not-so-humble- opinion Sean Connery was the ONLY James Bond.
But that's for another election. :>
Or you'd owe me a keyboard
If I could have, I would have been tempted to open it - and even then I probably wouldn't have gotten cool enough. (One of my friends resorted to rolling down all her car windows - in January - in Minneapolis and she still felt too hot.)
This one might be appropriate, too.
horse fly all the way to England on top of their plane??? My, it must have huge lungs!!!!!!!!!!
Ah, that is why her horse didn't win. I get it now! I'm gettin' old; I just can't think like I used to...ah, when was that?
It's too bad we can't can't drop things down on the Republicans. It's all random 
But you nailed it with the 'second grader' comment.
I would posit that most folks who have ever flown on an airliner have at least a vague understanding of what would happen if airplane windows could be opened.
Something bad would happen.
"Rolling down" was my interpretation.
Rmoney just said "Open".
Windows in cars 'roll down', so that's the analogy I chose.
Nit picky.
Don't shoot the messenger.
But then I don't fly it much above 5 or 6 thousand feet high.
