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Forties isn’t old. You might not have the energy reserves of a younger person, but you shouldn’t feel like your brain is mush.

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I’m a professional theoretical physicist in my 40s and I never thought the day would come that I would realize I became shit at mental math. I can do quantum physics in my head but don’t ask me to add 17 to 34

Thanks for mentioning this. It makes me feel better about stumbling with metal math in front of some colleagues that are faster.

I've also noticed that I drive more slowly/defensively, if only because I need more time to react to all these other bad drivers =P

You won't catch me (nor any of my brilliant brothers) doing math without a calculator... and I got a SAT790Math way-back-when (do they still score that way? I missed one question, only; many of my brothers scored 750+).

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