It turns out you can live on java alone. Just not as much as you think.
Finally, an algorithm we can love (sorry, Facebook). The Wall Street Journal reports on how the Army figured out how to keep soldiers going on very little sleep:
[Coffee] dosing strategies generated by the algorithm will vary depending on the circumstances.
An otherwise well-rested soldier who gets five hours of sleep one night could achieve a level of alertness resembling eight hours of sleep by consuming 100 milligrams of caffeine upon waking at 7 a.m. and again at 9 a.m. ...
So far, the algorithm isn’t public, but the Army plans to license the technology and a smartphone app. Over time, the app will learn how individual users respond to sleep deprivation and caffeine, and will allow them to specify the time of day when they wish to reach peak performance so they can tailor their caffeine consumption accordingly.
Read it all (subscription required).