Why do they need this? Then, that any industry has long passed to electronic production systems, and the products themselves (metal, wooden, plastic, etc. D.) are often created using high nanotechnologies. That is, a large role is given to atomic structures, where the material cannot be done manually, as it was in ancient times. It is precisely the nanotechnologies that allow us to say that retraining of personnel is a useful and profitable matter for employers.