What is the difference between autism and mental retardation (no, this is NOT a cruel joke)?

This is not a cruel joke. I know you're expecting a punchline at the end so horrible I'm arrested for crimes against humanity. But no. I really want to know what the difference is.

http://en.wikipedia.org/wiki/autism
http://en.wikipedia.org/wiki/mental_reta...

autism is a form of mental retardation

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　　Methadone 　　Metabolic Syndrome 　　Metabolic Disorders 　　Mesothelioma 　　Merkel Cell Cancer 　　Mercury 　　Mental Retardation 　　Mental Health 　　Menstruation 　　Menopause 　　Meningitis 　　Meningioma 　　Meniere Disease

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What a stupid question! Are you retarded or something?

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Did you hear that they have discovered that hair on your knuckles is a sign of mental retardation?

YOU GOT ME....That was great! I was looking at my knuckles before I read the entire question. LOL

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Did you see the report that said hair on your knuckles is a sign of mental retardation?

Good one!!! but why do i have the feeling that veeeeeeery few r the people who got ur point?? :D

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Can an allergy to antibiotics( eg Cephalexin) cause brain damages or mental retardation?

Please see the web pages for more details on Cephalexin. No side effects, as pointed by you, are mentioned in the drug information.

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