In reference to the bolded portion above, I never stated that SEE was a requirement of learning English. I stated that it can be an effective 
tool.
"Signing Exact English is a sign language system that represents literal English. *To make visible everything that is not heard, S.E.E. supplements what a child can get from hearing and speechreading. *Since American Sign Language (ASL) has different vocabulary, idioms and syntax from English, SEE modifies and supplements the vocabulary of ASL so children can see clearly what is said in English. *****This system was first made available in 1972."
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If you'll re-read what I posted, I made reference at least two times to the fact that ASL and English are two distinct languages and shouldn't be used together when communicating with a child who is developing language.