

Life expectancy is a useless metric for this purpose. Maybe it would be more useful if you used “life expectancy at age 10” (so after any childhood illnesses), but even then it doesn’t really say anything about what the process senescence looks like.
Yeah every 10 years would be good even if you assume they did learn everything correctly the first time and don’t forget anything, just to make sure people are keeping up with changes in the law. I regularly still see people loudly sharing interpretations of the law on social media that haven’t been true for a decade. And then speed it up to every 5 years after 65 to additionally account for senescence.