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Submission Knuth got it Wrong->

davecb writes: Think you've mastered the art of server performance? Think again.
Poul-Henning Kamp, in an article at ACM Queue finds an off-by ten error in btrees, because they fail to take virtual memory into account. And he solves it in the open source "Varnish" HTTP accelerator, for us all to see and use.

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Knuth got it Wrong

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One of the chief duties of the mathematician in acting as an advisor... is to discourage... from expecting too much from mathematics. -- N. Wiener