My terrible idea is that the world move to an 8 day week. Everyone works (at most) 4 days on, 4 days off. School is 4 on, 4 off. Two alternating shifts. Its always the weekend for half of everyone and everything is always open. I guarantee a roomful of smart people will be able to tear this idea to shreds. We could invent cool new names for all the days of the week though.