Most people that hear it for the first time, it is so contrary to everything they have heard, that they can't accept it. Their brains refuse. It is hard for most people to change their world view even when exposed to overwhelming evidence, especially the first time they are exposed.

I think the way you are posting things, exposing little bits of evidence at a time with no pressure is the best way to win people over. If too much pressure is put at first, they will fight against it. They can't help it. When slowly exposed with no pressure, sometimes they will start considering the truth after their brain has time to process the data without fighting it.