IDEA for an episode
I have an idea that I think would do well for an episode on BBT. Imagine the president of Cal tech gives Sheldon an assignment to show around a potential new student... a genius, but not any genius , to Sheldons shock a 8 year old genius! Sheldon never thought he would meet someone on his intellect until he meets this boy that resembles himself
In addition this can develop a storyline of Sheldon and Amy discussing the question if they want kids.