Just remember, there are tons of people around him that hear him act and talk the way he did last night and keep this all going. He talks to foreign leaders and loses his train of thought. He participates in security briefings and decides how to handle crisis while he cannot hold a conversation. That isn’t one bad debate, it is a result of him not having notes or interaction with his advisors. This was him demonstrating his actual mental capabilities. It was predictable by anyone who has paid attention. Also, name one thing he did over the past 4 years that wasn’t immediately blocked that isn’t just… not be Trump.