walkinwood
Thinks s/he gets paid by the post
.... but not absolute life-spans. The article explains the difference and also the possible ramifications. I found it to be a very compelling read. It probably does not affect our ER planning much since most of us are very conservative (optimistic) about our life spans.
https://www.kitces.com/blog/squaring-the-survival-curve-and-what-it-means-for-retirement-planning/
https://www.kitces.com/blog/squaring-the-survival-curve-and-what-it-means-for-retirement-planning/