[digi_owl]

Because Jobs hated the sound of spinning fans supposedly.

The macbooks are not the first in that regard.

Various Apple products over the years have had problems with overheating because of this.

Supposedly one variant of the AppleII has a service recommendation of lifting and dropping it on to the desk. This because the lack of fans would make the logicboard buckle from heat, unseating some chips.

I do believe a certain Cube was also fanless, and had trouble keeping itself cool. Never mind that it had a power switch that would be flipped by a stray piece of paper...

[jkmcf]

If I have to agree with Jobs on anything, I'll start w/ the noise of spinning fans.

[digi_owl]

I find them a necessary evil.

This because you only get so much cooling passively, and you only get so much computing done pr unit heat (something that even mobile phones are discovering).

End result, you can only compute so much on a passively cooled system.