this post was submitted on 20 Jan 2025
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The first time I took mushrooms it had been after reading about this kind of thing for about a week.
I recall reading about a man who was effectively blind but his eyes worked fine. What didn't work fine was the part of his brain that interpreted what his eyes saw. So he just saw smeary streaks of light.
It's kind of like Linux without its V4L2 system for interpreting video capture devices. It can't actually see video without it.
That sounds like the story in the Oliver Sacks book, The Man Who Mistook His Wife For a Hat. There was also a story in there about a man who taught himself to see just fine, even though his eyes didn't work at all. His brain just made educated guesses.