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| Streams, affordances, Facebook, and rounding errors by possibly noteworthy at  7:43 am EDT, Mar 23, 2009
 |  | Kellan Elliott-McCrea: Don't let your design make promises you can't keep.
 From the Economist: He has to start deciding whom to disappoint.
 From the archive, Siva Vaidhyanathan: "It's the collapse of inconvenience. It turns out inconvenience was a really important part of our lives, and we didn't realize it."
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