When they tell him this information he becomes very disgruntled and feels that they had taken advantage of him. He had developed a close relationship with the leader of the administration and felt betrayed. He learned that people can be very dishonest and take advantage of you if they feel it may better there situation. He learned this lesson the hard way.
The world of Ender differs in many ways from today’s world. Ender is monitored by a chip in his head. The administration put this chip into his head and can see what he is thinking. There is no technology like that today on Earth and likely won’t for a significant amount of time. In today’s world we do not have to fight off aliens, while in this book it is a very common thing. It is possible that one day our world will be like the world of Ender, but today is not that day.
Ender’s Game offers more than just a good story; it teaches a lesson. The reader is taught the same lesson that Ender was. People will lie and manipulate to get you to do things you may not want to do. This is apparent when the leader of the administration tells Ender it is only a simulation when in reality it was a real battle. Ender would not have done the things he did if he had known it was a real battle instead of a simulator. This is an important lesson the Ender and the reader both