So far, most software applications, platforms, apps, and games, including Knewton’s, have been optimized for transferring quantitative, bounded bodies of facts in domains like math, science, or engineering, as well as basic literacy and grammar. An adaptive-learning platform like Knewton’s is helpless to tabulate or analyze a student’s insight in class discussions, the special brilliance of an essay, or creativity in a group presentation; anything that complex requires human discretion.