> Autism wasn't even a thing. Just like in the middle ages, there was only a single illness that caused fever (aptly named "fever"). More advanced illnesses re

> Autism wasn't even a thing. Just like in the middle ages, there was only a single illness that caused fever (aptly named "fever"). More advanced illnesses required bacteria and viruses which were not invented until 1676 respectively 1892. I wonder how genetic disorders worked back then considering genes didn't exist yet.