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> Trivial in math is a term that refers to anything you've already learned.

According to a professor, "trivial" means: "If this is not trivial for you, you should see this as a clear signal that you should take this course seriously instead of slacking of, or even that you simply are in the wrong course."

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I dunno, a common refrain I heard across all fields of math in grad school was “This is obvious. Wait, is this obvious…? Y… yes yeah it’s obvious. ”

It's actually an interesting observation. If you know where your keys are, finding them is trivial, but if you don't, then even the refrigerator becomes plausible.

Math does feel like that a lot of the time. Once you've tree-searched proof space and found the connection, you can usually spend way less time proving it the next time around.

This. It's always a good sign you've fucked up somewhere.

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