"The ticker beat me by lagging so far behind the market. I was accustomed to regarding the tape as the best little friend I had because I bet according to what it told me. But this time the tape double-crossed me. The divergence between the printed and the actual prices undid me. It seems so obvious now that tape reading is not enough, irrespective of the brokers' execution, that I wonder why I didn't then see both my trouble and the remedy for it. I did worse than not see it; I kept on trading, in and out, regardless of the execution."