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All the Perl that's Practical to Extract and Report

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  • If they lose 1/100th of a percent, then their reliabiliity rate is 4 sigma: .9999, which is pretty damn good.

    If the did manage to improve tenfold and reach 5 sigma, or one lost package per hundred thousand packages, that would be truly amazing. It's hard to imagine UPS doing much better than that.

    But they'd still lose or misplace 130 packages a day, one of which could be yours, which still wouldn't make you feel any better.

    For example, at Pearson Int'l Airport in Toronto, they lose, misplace or delay

    • You can't base their reliability on the number of packages lost alone. Since they 'guarantee' on time delivery, you'd also have to factor in late deliveries.

      As I said, it's all based on what people are willing to tolerate. If an airline lost 1 in 10,000 passengers , that would be considered completely unacceptable, however, people seem to tolerate being late due to airline delays on 1 or even 2 in 3 trips.