Educators use technology to try to improve education, but physicists use technology to try to c0ollect data, says David Wiley. Given that the use of technology hasn't really improved education (though it's had a big impact on access), perhaps it would be useful to help in the collection of data. "? After a recent tweet on this topic," he writes, "a number of colleagues accused me of having physics envy. Believe me, you don't have to wish you were a physicist to be disappointed by the quality of data educators have access to." Well perhaps. But would such data be of most use to students? Shouldn't we be devising ways for students to organize and track their own learning?