If CL used only the "champions", they violated the Prime Directive of testing, which is to use as many novices as possible. People who understand graphics deeply, and have experience with a wide range of applications, simply will not run into most bugs, or will adjust to them so instantly that they won't even consider it a problem. If you want to find problems, you need to let relatively inexperienced people try the product; Murphy's Law will then come into play with a vengeance, which is exactly what you need when testing.

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