The S&P 500 Will Gain 20% This Year | Recency Bias

“The S&P 500 will gain 20% in the first year of the new Millennium!” said the yuppie analyst to an impressed journalist while sipping champagne and chewing on a lobster tail. Except, the yuppie analyst was dead wrong in this prediction; the S&P 500 fell 10% in the year 2000. How could this, obviously well-paid, lobster-eating yuppie analyst be so wrong?
from Facebook https://buff.ly/2GLHplO