Your "work/chore/business", "fun/relaxing/pleasure" dichotomy seems to be universal. I can look at any task on my to-do list and instantly put it in one of those buckets. Probably anyone with a to-do list can.

Why is this?! Assuming this ability is universal (and not just something chime and I are good at:), there must be an innate psychological reason. Possibly even a "simple" reason.

I will venture a guess: real or imagined self-threat is always associated with failure to complete a "work" task. This is never true for an individual "play" task.

Thoughts?