wat's optimal circadian rhythm, if ju cud tune the sun to jur will? wud ju get more done if Earth period was 16h instead of 24h? or 12? or 6?

also, wat's optimal week cycle? 7 days, or 6? how do i optimally chunk passage of time into convenient mental categories? shud they be stable, or mixed-strategy?

i'm just surprisingly happy abt by my 16h-days and 144h-seasons, so thr's gotta be more utility to find here.