Machinery reluctance? One of my areas of work with the University of Auckland was to sort out machine guarding. There was a fair amount of initial resistance from some users who were happy using non compliant but robust equipment. After a good amount of engagement, older machines were either retired or disposed of, upgraded (only for special stuff used in research) or replaced with fewer, more efficient and easier to use machines. In addition, much of the work to manufacture specialist items is carried out by a few very experienced operators as opposed to students ( who now mainly provide drawings, etc) all in all a great success.