https://vadim.oversigma.com/MAS862/Project.html

But lay on MacDuff, pour your great knowledge upon me. Tell me how a carbon atom knows it's in a thirty year old body or 95 year old?

"Also, how can two thirty year olds make a zero year old baby?"

Surely you can respond to this puzzler? Even if I'm in the left field of the Andromeda Galaxy?

Explain away, professor!