Gregory Zuckerman's takeaways from the 'Greatest Trade Ever'

here. Summarized:

1. When Wall Street is wheeling out its latest can't-miss product, be skeptical.
2. Have an exit strategy -- and cash to cushion any tumble.
3. Debt markets can do a better job predicting problems than stock markets.
4. Educate yourself about the range of exchange-traded funds being introduced, some of which can play a valuable role in a portfolio.
5. Don't underestimate the value of a safety net, such as put options.
6. A historical perspective can be a valuable tool.
7. Even the greatest trade doesn't last forever.
8. Don't risk too much in any one trade, even one that seems like a sure thing.