Ender's Game
why does Graff make Ender isolated from his family and the other boys? What lessons is Graff trying to teach Ender?
The course to train as a starship comander will last ten years without vacations or visitors. Ender agrees to the traning. Aboard the shuttle launch with 19 other boys, Graff makes an object lesson of him and intentionally made the others hate him. Graff pretends to dislike Ender, who feels friendless.