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I was lucky to come off no worse than I did. None of this would have happened if, as I wish I had done, I had asked myself beforehand, "If you do this, what do you want to happen?" and "If you do this, what do you think will happen?" I wouldn't liked either answer. These two questi*** became valuable guides for me in the future.

从抽象的角度来说，生活就是机遇和选择的结合。机遇可以被想象成手上的牌，而选择则是你的玩法。

Having an "edge" and surviving are two different things: The first requires the second. As Warren Buffet said:"In order to succeed you must first survive." You need to avoid ruin. At all cost.

Meanwhile, besides playing my cards and trying to quietly instruct him, I was counting cards and determining how much we each should bet. Excitable and a bad listener under normal circumstances, he paid little attention to me, misplayed hands, and bet too much for our $10,000 bankroll. Soon I had won $1,300. Betting wildly, Manny won $2,000. Then a drooling pit boss invited us to dinner and the show.Then a drooling pit boss invited us to dinner and the show. Passing on the show, we enjoyed filet mignon and champagne. Within hours, Destiny would present us with the bill. The charge? Eleven thousand dollars in lost profits.

诺贝尔经济学奖得主保罗·克鲁格曼认为高频交易只是 从普通投资者身上获利的手段。不仅没有任何益处，而且浪费国家资源，因为这种方式并不创造社会财富。

当一个投资组合的贝塔(beta)值为0时，该投资组合的价格和市场价格变动无关，这就是所谓的“市场中性”。 而如果投资组合的贝塔值为正，这种组合的价格会对应市值的升降而同向增减，贝塔值越大这种趋势越明显。负的贝塔值则表示组合的价格波动和市价波动趋势相反。

如果从另一个金融理论学家们常用的角度—风险调整超额回报(risk–adjusted excess return)，也被称作“阿尔法”(alpha)指标 (与同等风险的投资相比，年收益率超过这些投资的部分)—分析，我们的平均超额回报率达到了每年20%。在未扣除成本和佣金时，年投资收益率约为26%，这就意味着我们的收益率总体可以看作由三部分组成:美国短期国债的5%年收益、与市场有细微相关性 的1%收益和20%的超额回报率。

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