Optimising the 20% of water spent on humans seems suboptimal. Not much gains to have there, just stress. All the billboards who make you think it's you who spen

Optimising the 20% of water spent on humans seems suboptimal. Not much gains to have there, just stress. All the billboards who make you think it's you who spent all the water. It's the same thing where people are advised to conserve electricity yet we see large offices glowing with every light all night and day.