Every decade seems to be gradient descent/ascent on a simple ground-level variable. We pretend to do more complex things with more abstract cost functions, but it’s mostly theater.
Typical:
Teens: more friends
Twenties: more fun
Thirties: more money
Forties: more energy
Conversation
Replying to
Fifties: More relevance
Sixties: More bodily capability
Seventies: More visitors
Eighties: More peace
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