Respectfully, I disagree. You're correct on the facts, but any "new techniques, materials and tools" need to be communicated to the brick layers. That takes time and effort i.e. it all needs to be actively managed. The brick layers have to be able to work with those new techniques and materials. I don't want some of them using method #1 over here, and method #2 over there, unless I'm wholly conversant with the methods, and fully confident that it'll all mesh eventually. The system i.e. the whole shebang has to work coherently to serve its purpose.