Then how the heck does he manage to always locate the correct apartment? It seems like a good hitman would never kill the wrong client. So, he must have always known the exact address. But, how does a guy who can't read know the exact address of anyone?
I spent ten years on the board of an organization that taught adults how to read. There are many people who held complex jobs or made it through high school faking it with memorization and help from others. Not very many centuries ago, more than half the people in existence were illiterate. It isn't as though they can't remember landmarks or symbols or patterns of characters or that they don't have some knowledge of letters and numbers. Recognizing the limited vocabulary of addresses is not as problematic as knowing the symbolic meaning of less specialized groups of words. Almost nothing Leon did required a sophisticated reading ability as Tony took care of business and he stayed in the same place.
I understand now. I guess I just never thought about it like that. It isn't all Japanese to him. He can still find a street corner and he can still tell the difference between apartment 2A and 2B.
That is not what I am saying. It was one of the reasons he did not read or write well. Not that dyslexics can not read or write. It was part of his reason for being able to get along yet also was not able to fully read or write among whatever his other reasons.