also in another video (44:18), andrew morton (akpm) gives an excellent answer to the question "what will happen to linux in another 20 years?" and i would like to quote a part of it:
"...could be at one day, a completely new technology comes along, some little quantum based computer with a million quad cores, which comes along and completely makes linux obsolete. i suspect the first thing such a computer will do is emulate x86 and we will just keep going. [laughs]"