Yeah, like others have posted in this thread, I'm usually too busy trying NOT to pay attention to others to notice whether or not they've Asperger's.
But like I said earlier in another thread, I consider it a possibility that if I ran into someone else with AS, I may have mistaken their ASD for rudeness.
Something else that would factor into the blurring of the picutre here, is that the Netherlands are pretty much a very individualistic country, in which most people mind their own and don't really regard strangers unless they absolutely have to ask or say something. In that sense, I have, in the past few years, considered the city I live in relatively socially inept; but I know that really isn't true. But my point is that I think autistic people will be even less visible in a very individualistic society.
BTW, I think that if I were pursuing my special interest in public in some shape or form, and someone came up to me to strike up a conversation about it, the last I would think of that person is that they were on the spectrum. I'd also probably be near-panicking on the inside. (But I do know that a number of AS folks make active attempts at socialising better/actually like doing it, I'm just prone to projecting myself on others when it comes to the autistic spectrum).
But in conclusion, no, I don't notice other aspies in public.
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clarity of thought before rashness of action