When Eden was listening to his professor, he was listening earnestly. He knew that information was key, a key that leads one to victory, so he listened to the course, even though it was boring.
Who likes to hear someone rumbling about history that everyone knew after all?
Not the people who already knew about those information, so two people in the class, one boy and one girl just began to slack off during the lesson while the others were listening.
Eden's eyes didn't escape that, but he didn't care about them either. Sure these two could become good sources of information just by seeing their attitude, but he was too lazy to befriend someone just for that.
Eden values true friendship above all, so the type of friendship with hidden agenda wasn't to his liking.
Eden then listened to the professor. He was surprised to learn that the system was saving people for hundreds of years and that the last planet it saved was Earth, his home planet.