Actually, sign languages are quite distinct. Distinct to the extent that British and American sign language are not mutually comprehensible (ASL is in fact rela

Actually, sign languages are quite distinct. Distinct to the extent that British and American sign language are not mutually comprehensible (ASL is in fact related to French sign language). In Norway (where I'm from), some of the sign language dialects vary a lot more than the spoken dialects as well.