Markets fluctuate. That sounds obvious—until a favorite stock climbs for years and investors start treating gravity as optional. Tom and Don revisit Financial Physics and the essential difference between a temporary market decline and permanent single-company damage. The cure is not predicting the next dip. It is connecting the return you need with the volatility you can tolerate, then owning thousands of companies and rebalancing instead of reacting. Questions range from IRA eligibility fo...