I like this discussion. I’ll add,
“Age is only a number.”
“You’re only as old as you think you are.”
We absolutely have social constructs around age and as was referenced, the childhood/adulthood binary is both rooted in biology & fraught with exceptions/ interpretations, and of course can be classified in ways other than binary.
Let’s take a running example: most of us have heard of the fast twitch/slow twitch binary classification for skeletal muscle? Ah, many also know there’s a split of the FT fibers, so ST: Type I and FT: Type IIa, and Type IIb. This is the correct & complete classification, yes? Some of you know better:
[quote]Muscle fiber types can be described using histochemical, biochemical, morphological, or physiologic characteristics; however, classifications of muscle fibers by different techniques do not always agree. Therefore, muscle fibers that may be grouped together by one classification technique may be placed in different categories using a different classification technique. [\quote]
https://academic.oup.com/ptj/article/81/11/1810/2857618There is an underlying reality. We will all die someday; we are all born with some set of biological features. We can classify them, and then create conventions around them (men used to wear pink and high-heels, women didn’t), but reality is much more varied than the simplifications we invent.
This doesn’t make the simplifications inherently “wrong” either, they are helpful for navigating everyday life. It’s when we assert our simple model is the complete representation of reality that we get ourselves in trouble.
Hope everyone is having a good day on this wildly complex 🌎.