Comment Re:More than 7 hours needed? Slashdot editors? (Score 0) 329
Perhaps we've evolved a bit beyond that... We've had fire for a long time as a species, so I would think that we can function even in the dark. If you slept for over 12 hours during 3 days without electricity, then you're probably just really tired. But in controlled lab studies in complete isolation without any outside light cues, humans rarely need any more than 9 hours.
