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Dec 2, 2023

This has to be the worst gotcha I’ve ever experienced in Wolfram Language!

• –∞ < 1 < ∞ is True. Great.
• Min[{–∞, 1, ∞}] is –∞. Great.
• MinimalBy[{–∞, 1, ∞}, Identity] is… 1.

I don’t know why. But at least TakeSmallestBy[{-∞, 1, ∞}, Identity] is –∞ as expected, so I’ll use that.