I can definitely see it being true in some cases, but in software I strongly disagree. I'm speaking as someone who started programming for clients at 15 and am

I can definitely see it being true in some cases, but in software I strongly disagree. I'm speaking as someone who started programming for clients at 15 and am poised to retire at 33. Everyone starts slowing down after 25. The extra years learning by experience gave me a leg up that was completely unmatched by others. It opened a ton of doors that shouldn't exist for a lower income kid with no opportunity for college. Chess is a more extreme example. Grandmasters regularly play their best games in their late 20s for a reason. Super grandmasters all started playing around the same age.