Why not just read to him?

This is a pretty simple question. In his book "How to Teach a Baby to Read" Glenn Doman, the pioneer of the flashcard method for teaching children to read, states the very simple answer. Most children with normal eyesight do not have the ability to clearly see small print. The great majority of children's books have print that is just too small for a baby. Lots of people believe that reading to a child is a legitimate method of teaching the child to read. I don't believe many children age 4 or under have ever been taught to read by being read to. At some point, children have to be exposed to print large enough for them to see if they are to read at such a young age. Hence, the effectiveness of the DVDs where the print shown is large, clear, and unambiguous.