Not too long ago, my brother and I were having a discussion about a debatable subject. (The subject will remain anonymous). He was very convinced that he was right and I was very convinced that I was right. I was questioning him on some of his viewpoints for a while, and then finally, I pointed something out to him. The point that I brought to his attention seemed so obvious to me that I didn’t even bother to bring it up in the beginning because I thought he would have thought of it already.