The Big Bang Theory and the Problem With Magnetic Monopoles

If these parts of space were once in causal contact, like if they were all much closer to each other and could exchange heat, then it would make a lot of sense for them to all have the same temperature. After all, if you put a hot thing next to a cold thing, they will exchange heat until they arrive at some same medium temperature. But as it stands, these parts ofspace are so far away from each other that it seems impossible that they could have ever causally impacted each other. So how is it possible that all of these points in space ended up at the same temperature? All right. The third problem that cosmologists were worried about in the 70s when