why when writing with both hands the other one mirrors?



here is an example of what I mean [https://www.youtube.com/watch?v=8qGzB4YMXaw](https://www.youtube.com/watch?v=8qGzB4YMXaw) when / if I do this I don’t think about what the left hand is doing, and it just happens. But why? It’s the weirdest thing ever. Also if you never tried it, give it a go. Most people can do it. Works with print and script.

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