I don't think this is stupid, but probably won't happen any time soon. A project to correlate what humans look at to objects in the real world is probably poss

I don't think this is stupid, but probably won't happen any time soon. A project to correlate what humans look at to objects in the real world is probably possible, but would be a significant effort to get it to work reliably and accurately. Scaling it to a large population and processing the data to the point of providing useful insight about how we behave and look at things would be another hurdle. Basically this probably won't happen until Google (or Facebook, or Apple, etc) decides that knowing what people look at is worth the effort/cost.