I think it is worth calling attention to the fact that the current market run provides a vivid example of the logic of Zeev's stated reason for not shorting ... that when he's wrong, he's not doubly wrong. He has been bearish for quite some time, but, instead of shorting, he simply withdrew the bulk of his capital from the market. It turned out that the market did not go down (yet), but that fact did not injure Zeev. He's simply sitting on more cash.
If I've learned anything from maintaining the Zeev's Ideas Board (#board-1351), this simple concept is the most important. I'm not suggesting I don't short because I do. What I've learned is ... market fluctuations do not hurt your cash. It's an important lesson, and will be until we get back to the "Cash is Trash" days of old.