Because that would make too much sense.

Am I the only one who noticed that Dr. Edwards' friend is the eccentric businessman from Fear the Walking Dead?

Pretty sure that Richard Alpert and the Hostiles engaged in firefights with the U.S. Military, and gassed DHARMA to death using the Tempest. All of that long before 815.

I think there is a strong argument to make that the Man in Black is responsible for the dreams. Below be spoilers: