Every time Great sees the future his behavior changes, for example in episode 1 he left when he hit the woman with a car but later he helped the woman after seeing the future. When he collided with Tyme in the hospital he didn't help him at first and then he stopped. And if you pay attention all of these events bring Great closer to Tyme.
The most confusing scene for me in the series is the first scene from the first episode, where Tyme is shot and Great's condition worsens in the hospital.
ilagally-kisskh,hitv