Perhaps the most interesting part of how they're doing it is that they have an algorithm that doesn't rely on the results of other test takers, except for the e

Perhaps the most interesting part of how they're doing it is that they have an algorithm that doesn't rely on the results of other test takers, except for the eventual statistics. Also worth seeing: http://testyourvocab.com/hard.php http://testyourvocab.com/hard.php