Elephant Truth
So, I think the elephant is like a rock. Oh, those are the tusks. One guy thinks the elephant is a rope. Oh, that's his tail. Oh, the elephant must be fat like a hippo. So, he must be a hippo or a cow. No, that is just his body. His legs might be like a tree. Too often, we are blind.
This is called "sample-bias".
Just because someone doesn't agree with you, doesn't mean they're "blind".
RE: OPINION =/= FACT