What were the biggest challenges for children in polygamous families when their fathers abandoned them after polygamy was outlawed?

When the Dow hits 50,000 this year, will that be Trump crashing the economy? Where are all the liberals predicting a recession and a crashing stock market? Jobs are also exceeding expectations every month. Is that the crash?
What are the most common situations where gut feelings tend to get it wrong, and how can we avoid those mistakes?