You've heard bits and pieces of this, but here is the whole story all together, with a summary at the end. It's about Trump and his businesses, which mostly are NOT successful. He's terrible at business.
This was written before the election, but it shows that we tend to believe what people say instead of the evidence.
Find it here: https://www.quora.com/Why-do-people-forget-that-Donald-Trump-is-a-successful-businessman/answer/William-Murphy-50?srid=5FxW&share=764f606d