Replying to woolcycle

But maybe you did some mental arithmetic in your formative years? My friend was a math teacher and talked about the need to grasp the abstract concept of number. Which might be hard to grasp if you only ever pushed buttons from infancy?
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Laeserin 1y ago

I'm from the era before buttons.

But I got into computers in the 90s and my mental-math abilities atrophied.

I used to be able to remember everyone's birthday, address, and phone number, too.

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woolcycle 1y ago

There are sutras for mental arithmetic formulae, e.g. All from 9 and the last from 10. I am getting back into it.

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Laeserin 1y ago

I need to do memory training, I think.