This came up in a current thread about transmissible Alzheimer's (https://news.ycombinator.com/item?id=19127520 https://news.ycombinator.com/item?id=19127520).

This came up in a current thread about transmissible Alzheimer's (https://news.ycombinator.com/item?id=19127520 https://news.ycombinator.com/item?id=19127520). I had never heard about it and found it interesting so I thought it was worth a separate submission.