What's really fun is - under "quiet" enough conditions - being able to kinda fee... | Hacker News

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		tbrownaw 77 days ago \| parent \| context \| favorite \| on: Humans have remote touch 'seventh sense' like sand... What's really fun is - under "quiet" enough conditions - being able to kinda feel walls from up to maybe an inch or so away. Not sure if it's air currents or reflected body heat or sound waves or what, but there's something there.

paleotrope 77 days ago [–]

That's like the fact that we can sense the difference between hot and cold water being poured into a cup

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