Great acting, camera and music .. BIG flaw in story

Rating: 9/10 (30 March 2014)

I don't really think this is a spoiler, because although I did reveal an event of the film, I did not reveal the end, but better safe than sorry.
If you are like me and can enjoy a film for its separate parts, i.e., acting, score, cinematography, plot or any combination thereof, I highly recommend this film. Lewis' performance caused him to not only replace my number one actor, but the top two or three because I think this performance is unparalleled. The acting, cinematography, and score combine to make for a great film experience, however the plot had a major flaw that bothered me: Daniel struggles to communicate with the deaf H.W., but why would that be so? Based on how he cared for H.W. throughout the movie, a man of his means would have educated his "son" to read and write, so why didn't he just write to communicate with the deaf child?