There's a likeness between hindsight and wisdom.
People are wiser about their past, they realize what's relevant and what wasn't such a big deal after all.
Wisdom is hindsight about the present?
> A society grows great when old men plant trees in whose shade they know they shall never sit.
a Schelling point for those who seek one
Wisdom is hindsight about the present?
> A society grows great when old men plant trees in whose shade they know they shall never sit.