bioheadlight & warm-loving computer
Ok, so how does ideal headlight look like?

Produces as much light as possible? ...no, that's an atomic bomb, not headlight.

Produces as much light as possible, and lasts as long as possible? ...that's better, but it still is not what is needed. Powerful headlights blind people, and that's not good use of energy... it is also annoying.

I guess feedback based on light sensor would work. Have few separate beams, and have light sensors. If too much light would reach user's eyes, turn down that particular beam. No more blinding, and it should be pretty energy-efficient, too.

(Actually, this is inspired by riding on white horses in the dark. As soon as you lie down because of low branches, you blind yourself.... bad.)

Now... does anyone actually make a headlight like that? Is there schematics available somewhere?

As far as computers go... it seems I have one CPU that hates cooling. It gets more stable when it warms up, and after I displaced the CPU fan so that only 30% of air hits the cooler, machine seems to last longer between crashes now...