The math is simple, but the implications of these schedules are different. The danger is in disregarding the effects that can occur as a result of fatigue and stress.
원문출처 : http://www.cnn.com/2016/09/15/health/four-day-workweek/index.html
원문출처 : http://www.cnn.com/2016/09/15/health/four-day-workweek/index.html