I suppose the definition of "mastering" can accomodate any opinion on the topic. Would this conatain any (most likerly rare) couter-example https://en.wikipedi

I suppose the definition of "mastering" can accomodate any opinion on the topic. Would this conatain any (most likerly rare) couter-example https://en.wikipedia.org/wiki/Late_bloomer https://en.wikipedia.org/wiki/Late_bloomer ?