qumbler: qumbles tagged raskinhttp://qumbler.comqumbler: a tumblelogqumblerqumbler: qumbles tagged raskinhttp://qumbler.com/images/qumbler.pnghttp://qumbler.com12030 http://qumbler.com/post/34000 Particletree » Visualizing Fitts’s Law http://particletree.com/features/visualizing-fittss-law/ vito design explanation fitts_law raskin usability Particletree » Visualizing Fitts’s Law
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