Wait, I was under the impression that hindsight bias would apply if I were to have said "Yeah, some actions seemed overblown even when I didn't know what was going on." Because I would have gone back and changed my memory of my first impression based on my subsequent impression.

Ergo: First Impression: X Subsequent Impression: Y Memory of First Impression after Subsequent Impression: Y (This SHOULD be X, but it isn't because of hindsight bias.)

But if I say: First impression: X Subsequent impression: Y Memory of First Impression after Subsequent Impression: X

Then I don't think I have hindsight bias. Am I misunderstanding something?