Yeah, it shocked me the first time I memorized a deck of cards with a memory palace. Plus, imagine how well trained muscle memories became since methods would have hardly changed from generations before.

One of the Polynesian navigational methods I have heard described, was laying down in the bow of the canoe and going into a meditative trace, thereby being able to feel the ocean swell, and infer the location of distant islands by the diffraction pattern of waves. https://manoa.hawaii.edu/exploringourfluidearth/media_colorb...

I wonder how it was even discovered this works