> anecdotally, it’s quite obvious that those who still maintain some work after “retirement” live a longer and healthier life. That's not at all obvious to me.

> anecdotally, it’s quite obvious that those who still maintain some work after “retirement” live a longer and healthier life. That's not at all obvious to me. Even if we put aside the problem with anecdotal evidence in general, your examples still don't imply that people remain healthier by working longer. They imply that health is positively correlated with working longer, which may also indicate that people who healthier are able to work longer.