I've always loved languages and been very good at learning them, although since I hate dealing with people and tend to be a perfectionist, I never actually speak the languages much. I took French in high school, and I still remember a lot of it, although I didn't get all that far. I majored in Mandarin Chinese in college and got quite good at it, including reading and writing, and even speaking because I went to Taiwan totally on my own after graduation and was immersed in a bunch of people who didn't speak any English (this was in 1969-73, before Nixon went to the PRC). I also minored in Japanese, because I figured since I was learning the characters anyway, why not? I haven't used the language since, but I'm still reasonably fluent with what I remember. I really need to get back into it! Since I did those languages before I had my ECT and memory loss (see my introduction in the getting acquainted forum), I still remember them. Oh, and I tried learning Welsh from a Teach Yourself book when I was in high school, so I still remember words and stuff from that. After the ECT, I taught myself beginner Hungarian, working all the way through the Teach Yourself book, and had a good foundation, but because of the memory damage, I've forgotten most of it. As someone else said, when you go in for "obscure" languages, which are a lot more fun, you don't get much practice!
Anyway, it's possible to learn languages as an Aspie if your talents run that way, although not being good at talking to people does get in the way of oral fluency. Unlike when I was first studying, there's a wealth of different tools available nowadays: CDs, computer programs, books, videos, etc., so whatever your learning style is, you can do it. I'd say go for it.
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"Beware of me; I cast no shadow when I pass."
Wake up, America, and smell the dictatorship!