I've done a reasonable amount of travelling, which I enjoyed, but not for too long at a time. I'm a home-body and get fatigued by it fairly soon, but enjoy thinking back on experiences when I've returned and then often wish I'd arranged a longer stay in the somewhat exotic place.

For infrastructure technology, C will be hard to displace.

Unix has retarded OS research by 10 years and linux has retarded it by 20.

One of the obvious things that went wrong with Multics as a commercial success was just that it was sort of over-engineered in a sense. There was just too much in it.

It's true that compared with the scene when Unix started, today the ecological niches are fairly full, and fresh new OS ideas are harder to come by, or at least to propagate.

From an operating system research point of view, Unix is if not dead certainly old stuff, and it's clear that people should be looking beyond it.

UNIX is simple and coherent, but it takes a genius (or at any rate, a programmer) to understand and appreciate its simplicity.