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Computerized Investing > November/December 2007

Editor's Outlook

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by Wayne A. Thorp, CFA

  • Annual Guide to On-Line Discount Brokers
"Microsoft's New Math"

Here is a little math quiz for you: What do you get when you multiply 850 by 77.1? You would be correct if you answered 65,535. However, if you were using Microsoft Office Excel 2007 prior to the middle of October, you would have gotten an answer of 100,000. This is not some new “Microsoft Math.” Instead, it’s the nightmare of every software user—a bug.

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