“When you let your attention slide for a bit, don’t think you will get back a grip on it whenever you wish–instead, bear in mind that because of today’s mistake everything that follows will be necessarily worse… Is it possible to be free from error? Not by any means, but it is possible to be a person always stretching to avoid error. For we must be content to at least escape a few mistakes by never letting our attention slide.”  Epictetus, Discourses, 4.12.1.19

The trump’s attention spans seems to be as long as a twitter feed. He is also free from error as long as his little finger on his small hand can point at someone else.