Aha!
Short for mathematical enlightenment. That breakthrough thinking moment or insight you experience after trying to solve a seemingly unsolvable math problem.
Solving mathematical quickies is an inexpensive way to activating the oft-atrophied right part of the brain, which would increase the chances of experiencing an aha!βwhen thinking laterally or even paradoxically often acts as a catalyst to finding the solution to an apparently wicked problem.
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