You&#x27;re correct, the US economy has a reliable boom&#x2F;bust cycle that is caused in large part by monetary policy and started in earnest under Greenspan&#x27;s tenure at the Fed.<p>That we&#x27;re in the midst of one of the largest and most artificial of those &#x27;boom&#x27; periods is undeniable, owing to the Fed&#x27;s injection of $4.5 trillion into equity markets.<p>Icahn is banking on Newton&#x27;s third law of motion applying to financial markets as well.