In times of rapid change, experience could be your worst enemy.
J. Paul Getty
In times of rapid change
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Hoping everything is okay at Casa PG for the holidays.
More generally, I favor this rendition of the same principle:
“It Ain’t What You Don’t Know That Gets You Into Trouble. It’s What You Know for Sure That Just Ain’t So”
https://quoteinvestigator.com/2018/11/18/know-trouble/
There’s also Clarke’s First Law:
“When a distinguished but elderly scientist states that something is possible, he is almost certainly right. When he states that something is impossible, he is very probably wrong. “