Read any old book (like from the 1800s), or look into anyone's family history. There is always some version of "Larry never leaves the farm". Nobody every diagnosed "Larry" so we don't know what he had and often we only have a small fraction of the symptoms recorded, but what we have sounds suspiciously like Autism (and one of a dozen other things we now have names for)
I think this explains at least some of it. In my childhood (1970s) as best I recall, these kids were hidden away. They went to separate special education schools or a separate classroom in the main school and didn't really mix with the rest of the kids. Today the attempt is made, for better or worse, to mainstream everyone as much as possible.
It still feels like there is more autism today compared to then though. I would guess that it's some combination of more people waiting to have kids until they are older, environmental factors, mania about cleanliness and sanitizing everything, maybe social factors such as putting more kids in daycare at a very young age, IDK. I'd say the same thing about asthma and food allergies too, seems that half the kids today are allergic to something, need inhalers, etc. It was unusual among my friends as a kid, at least I don't remember it being common.
Yup. Or if they were rich, "eccentric".
https://en.wikipedia.org/wiki/John_Bentinck,_5th_Duke_of_Por...
> The tunnels under the estate were reputed to have totalled 15 mi (24 km), connecting various underground chambers and above-ground buildings. They included a 1,000 yd (910 m) long tunnel between the house and the riding house, wide enough for several people to walk side by side. A more roughly constructed tunnel ran parallel to this for the use of his workmen.
> The duke was highly introverted and well known for his eccentricity; he did not want to meet people and never invited anyone to his home. He employed hundreds through his various construction projects, and though well paid, the employees were not allowed to speak to him or acknowledge him.
> He ventured outside mainly by night, when he was preceded by a lady servant carrying a lantern 40 yards (37 m) ahead of him. If he did walk out by day, the duke wore two overcoats, an extremely tall hat, an extremely high collar, and carried a very large umbrella behind which he tried to hide if someone addressed him.
> He insisted on a chicken roasting at all hours of the day and the servants brought him his food on heated trucks that ran on rails through the tunnels.