Being NT doesn't mean they are absolutely perfect. In fact, some NTs can live in their own world too. Personally, I've seen some dumb or stupid behaviour from NTs, which has made me start to think that no human being is perfectly ''normal'', not even Queen Elizabeth.
For example, yesterday in the bus station I saw these two middle-aged women walking across the bus station, and this great big double-decker bus was rolling in right behind them, and I could tell that they were oblivious that there was an enormous bus right behind them that wanted to get by. I felt like yelling to them, ''that bus behind you wants to get by, you know!'', but I didn't of course.
Another example is the other week I was with my mum in a clothes shop. My mum's sister works in this clothes shop, and we were chatting to her at the counter. We weren't standing in the queuing area though - we were standing to the side, and so weren't in anyone's way. We were positioned in a way what didn't look like we were being served and was obvious that we were just chatting. But this tall, cocky, confident-looking bloke (he was quite fit actually, and looked NT as far as I know) stood near us then said, ''oh excuse me, are you in the queue?'' and we said no. And I thought to myself that even NTs can't always reckognise body language. Even I would have figured out that they weren't being served just by glancing at them, even if I was deaf.
Last example is my friend's 20 year old sister X is NT, and is really popular and outgoing. She is addicted to facebook, and spends lots of time with her mates, partying and socializing (and other stuff what I wouldn't touch with a barge pole). But one evening X and her family was invited to her nan's for a family get-together, and X wanted to take her best friend with her, but her dad said no because her friend wasn't invited. X didn't seem to think anything was wrong with taking someone to somewhere she wasn't invited, so her dad had to literally explain to her that most people don't take friends to family get-togethers, unless they were invited. He also pointed out that her nan wouldn't have enough dinner to give to her friend, and he said that sometimes it can be socially unacceptable to take friends round to relatives. But X still didn't seem to understand, and actually acted confused.
So NTs aren't always super-perfect, like what some Aspies think they are. They can make mistakes too, social-wise. They can mis-read body gestures. They can misunderstand jokes. And they can act daft or even act thick, even when they're not.
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Female