Read the excerpt from "Flowers for Algernon."

This test lookd easy becaus I could see the picturs. Only this time she dint want me to tell her the picturs. That mixd me up. She said make up storys about the pepul in the picturs.

I told her how can you tell storys about pepul you never met. I said why shud I make up lies. I never tell lies any more becaus I always get caut.

What does the reader understand about Charlie that he doesn’t understand about himself?