Jeremy Grantham's fourth quarter letter begins with a short addendum (Stop the Presses!), which addresses two newsworthy items for Jan. 21. What a Decade! follows, providing Jeremy's thoughts on the past decade including a list of lessons learned. The Appendix is a summary of Jeremy's part in a debate entitled "Financial Innovation Boosts Economic Growth," sponsored by The Economist Magazine. (A link to a video of the debate is embedded within the document.)