The question the article wants to address though is whether or not working longer is working better. Maybe 5 hours will produce more work than 4, but this is at

The question the article wants to address though is whether or not working longer is working better. Maybe 5 hours will produce more work than 4, but this is attacking our traditional 8 hour system with the concept that, in the long run, you may be as productive while working less hours. Then again, their last point about hunter-gatherers isn't very convincing, since our needs have dramatically changed in the last couple hundred years.