Hindsight really is improving

hindsight

ˈhʌɪn(d)sʌɪt/

noun

understanding of a situation or event only after it has happened or developed.

"with hindsight, I should never have gone"

Clearly, Hindsight has increased dramatically over the last two centuries, in fact since 1920, people have become significantly wiser (with hindsight of course) !