Apple has been getting trashed lately by developers for how hot and loud their macbooks get. You can tell how much focus they put on cooling in this presentation. The macbook air literally doesn't even have a fan!
No; I have one. (Perhaps you're thinking of the 12-inch Macbook, which was fanless, and which they stopped manufacturing a year ago.) And I go to extremes to keep the fan from spinning up: using Turbo Boost Switcher, and/or running a program that repeatedly does the equivalent of "kill -STOP" and "kill -CONT" to a process, hundreds of times per second, to force it to use less CPU.
