Pedometrics is the measurement and modelling of learning. At the moment, measurement happens as broad bands such as GCSEs, A'Levels and degrees. But these measures are VERY coarse grained and have fixed boundaries. Let me tell you a story ... I was in class and outside it was snowing. One of my students quipped that it looked as if we were in for another ice age. Then someone else said that at least there was no "squirrel" running round trying to catch an acorn (you have to have seen one of the Ice Age films to understand). However, it is not a squirrel but a plesiadapis, the type of mammal that was around at the time of the dinosaurs and would later evolve into humans. A couple of the students were so intrigued by the idea that they then spent a while looking up the little critters to find out more. However, the educational system does not credit them with either having the get-up-and-go to find out nor is their extra knowledge recognised.
So we had a think ... and when that didn't work, we had another one. Ah, well, third time lucky; what we needed was a metaphor.