alt Hacker NewsIn the context of this discussion not at all - the comment I was replying to hinted that perhaps benefits from 30 min in sauna might be due to confounding stemming from time availability. Also all I'm saying is that poorest people (bottom 10%) generally have more free time than richest people (top 10%). I'm not discussing why, if it's system failure, their choice or anything else and I don't know why should I? Would this discussion somehow change how much free time each decile has? Of course not.
I don't get how you have considered all these details yet didn't try to steelman the "hint" better, e.g. 30 minutes of relaxed meditation compared to 30 minutes of sauna usage, as opposed to some vague definition of "do nothing" and whether different social classes effectively have very different baselines of doing nothing, such as their stress levels, does playing golf count as free time, or sunning on the deck of a cruise ship is that "doing nothing", etc. at which point the discussion about confounders really gets in the weeds. Unlike CPUs human in/activity is not like a no-op instruction