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A real expert goes so far into their craft that when they emerge the very foundations of what they understand is less sure and more unknown.

Experts who have strong unchanging opinions are really former experts pretending some point in the past is frozen.

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Be fair, I’m not suggesting that experts don’t change their opinions. In fact, just like you say, that’s a sign that someone has stopped learning.

I’m suggesting that hand-waving away information because someone has some strong opinions is silly. I don’t believe someone would ever dive into something that deep if they didn’t have some commitment to some opinion about their area of expertise

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