Delirium and cognitive impairment are marked by a string of symptoms ranging from confusion to memory loss. Recognising the symptoms early is crucial for timely intervention and management.
The important point to learn from this is that investors have to realize their own biases and tendencies and deal with them when investing. The market doesn't care what you believe any more than the rain cares whether you get wet. You can't let your emotions get in the way of your understanding the market, otherwise you can get swept away.