[londons_explore]

But nearly all problems boil down to nearly zero actual work...

Take booting up a computer for example. All that actually needs to be done is to display the login screen on the screen. And we know from 60 fps video playback, that the hardware is capable of displaying a frame inside 16 milliseconds.

[anthony_r]

You can create an operating system that just displays a static image within milliseconds yourself (shouldn't take you more than a few weeks), it would work even when compiled at -O0.