http://www.constrainedblisspoint.com/2009/09/checksums-for-checks/ where the social welfare function meets the grand utility possibilities frontier Sun, 16 May 2010 01:02:11 +0000 http://wordpress.org/?v=2.9.2 hourly 1 http://www.constrainedblisspoint.com/2009/09/checksums-for-checks/comment-page-1/#comment-587 Crystal Tue, 24 Nov 2009 01:31:13 +0000 http://www.constrainedblisspoint.com/?p=389#comment-587 The way that I heard it (from my sistah) is that leaving payment + tip equal to a round number is less secure, because if the person then says you paid any round number, you'll be less likely to notice the discrepancy. For example, you say you want to pay a total of $42, but they put in $47 to give themselves a better tip or whatever, are you really going to remember what you wrote down? But if you intended to pay $42.29 and it shows up as $47 on your statement, then you'd be like "hey, wait a minute..." Then again, if you intended to pay $42.29 and it showed up as $47.29, would you notice that either? And how much of a threat is this anyways? I feel like people don't trust people in the service industry enough... silly humans. The way that I heard it (from my sistah) is that leaving payment + tip equal to a round number is less secure, because if the person then says you paid any round number, you’ll be less likely to notice the discrepancy. For example, you say you want to pay a total of $42, but they put in $47 to give themselves a better tip or whatever, are you really going to remember what you wrote down? But if you intended to pay $42.29 and it shows up as $47 on your statement, then you’d be like “hey, wait a minute…” Then again, if you intended to pay $42.29 and it showed up as $47.29, would you notice that either? And how much of a threat is this anyways? I feel like people don’t trust people in the service industry enough… silly humans.

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