Riverwalk
Why all the talk of Autism - the OP hasn't claimed to be on the spectrum, as far as I can tell, but he's been diagnosed as such on this thread!
I don't know whether I am but I suspect that I might be.
In a thread about colour blindness in relation to things like signage design and the shirt colours of two teams in a football match, someone mentioned that he was 'face blind'.
That resonated with some of my experiences so I looked it up.
It is called prosopagnosia and apparently it is not necessarily all or nothing.
It can be linked to autism.
I had heard of autism but had thought, as it appeared that many medical professionals had until around 1980, to be about people at what appears to now be regarded as one end of a spectrum.
The more I read about the high end of the spectrum the more it seemed to resonate with my experiences.
In some ways it was quite a relief, as I had long had the idea that I seemed to be different from a lot of people in many ways, yet I thought that that was just because everybody experiences things in their life that other people experience but privately.
Like, for example, you see people at work yet you do not see them in bed, having a wash, getting dressed, having breakfast and so on, so what you see of them is just the smartly dressed at work version, and so that is how they only saw me.
So I just accept that I might have Asperger's syndrome, it seems to fit, but I have not been diagnosed, but apparently diagnosis is subjective, it is not a blood test or anything absolute like that.