Open Thread: What are your important insights or aha! moments?

by Emile 5y9th Nov 20141 min read61 comments

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Sometimes our minds suddenly "click" and we see a topic in a new light. Or sometimes we think we understand an idea, think it's stupid and ignore attempts to explain it ("yeah, I already know that"), until we suddenly realize that our understanding was wrong.

This kind of insight is supposedly hard to transmit, but it might be worth a try!

So, what kind of important and valuable insights do you wish you had earlier? Could you try to explain briefly what led to the insight, in a way that might help others get it?