[clairity]

observing professional sports, you find that despite physical fitness/attributes having already plateaued in the early-mid twenties, people reach peak athletic performance in our late twenties when our mental facilities have fully matured and we have some modicum of experience.

27-29 is probably exactly the maximizing range, for this reason.

[InvaderFizz]

I'm not sure allowing the beginning of deterioration that occurs after around 25 is a good thing in this scenario. The mental maturity is most likely largely a result of experience. I'm sure it has some hormonal impact, but that doesn't automatically mean late 20s is superior if we can maintain the healing capacity of a 18 year old while increasing our experience and therefore ability to process the whole picture.

I guess it comes down to: is the capacity of strategy developed as a result of age, or as a result of experience?

[clairity]

physical deterioration doesn’t really become evident until after/around 30 (the end of the plateau). neural development happens well into our 20s, with a long plateau into our 30s and a gradual decline after that (only becoming substantial around retirement age). growth from experience seems to be substantial into the teens, where it hits an inflection point and starts to decelerate but still climbs, albeit more slowly over time, well into our 40s at least but possibly our whole lifetimes.

we’d still get the most bang for buck if our age was ‘frozen’ in the late 20s because experience would still accumulate regardless, but we’d have maximized the combo of physical and mental growth. it’s only obvious in retrospect how immature we are at 18, both physically and mentally, or even at 25. that’s why sports is such a neat test bed, because it taxes both facilities enough to tease out these otherwise unnoticeable dynamics.