A thread in the physics education I received was "we used to have (old model), but then that experiment caused us to think (new model)" ad infinitum. Maybe ther

A thread in the physics education I received was "we used to have (old model), but then that experiment caused us to think (new model)" ad infinitum. Maybe there's just a problem with my own brain, but I experience significant interference between the old models and newer models. In particular, mass is super confusing to me in a way that, say, electric charge is not.