His point of view was that teachers should be viewed as technicians: they are here a apply a method, not to invent new ones. I think this applies to most jobs

His point of view was that teachers should be viewed as technicians: they are here a apply a method, not to invent new ones. I think this applies to most jobs really. Research and practice are different things, and even when the same person does both it's good to keep them at least somewhat separate. I (almost always) kinda want my doctor or mechanic to follow what's known to work, rather than try out new things. On my own software projects, experimental techniques seem to cause issues a lot more often than standard "best practice" sort of techniques and I try to keep them away from important production system. Etc etc.