I don't think it's any single point that dominates their belief, but it's that they have so many "doubts" about vaccines to point to. As soon as you debunk one

I don't think it's any single point that dominates their belief, but it's that they have so many "doubts" about vaccines to point to. As soon as you debunk one they move on to the next. In the end, even if you debunk all of them carefully, just the fact that there are so many "doubts" seem to fool the human brain into thinking things are not so clear. It's the same thing with global warming. The one dissenting scientist weighs the same as 10,000 on the other side. Or there's always the case from the past where the lone wolf scientist was right all along! I'm hoping with enough good arguments and data I can sway her view, but I also know the human mind is incredibly bad at rational thought and interpreting statistics.