Sign language is not universal. Historically, signs were developed regionally, and most modern BSL was usually developed at Deaf schools. BSL regional signs are really different dialects. Unlike accents which focus on how a word is pronounced, dialects use different signs to mean the same thing. For example, there are over 17 signs for purple.And just like you can tell where a person is from by their accent, you can tell where a deaf person is from or went to school from their dialect! To find o