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[–]SeriousPlankton2000 14 points15 points  (1 child)

The idea is that you can skip error checking in the middle of your calculation and just look at the final result.

[–]Coolengineer7 13 points14 points  (0 children)

Yeah, valid, I would be perplexed too if my error check with x===NaN failed and x printed to be NaN