1. But why is supervising your own work bad? Currently, you have to sign for your own work anyway and are thus responsible for it.. Who will be responsible in future the manager or the mechanic? And if say an owner has done some work on their aircraft and you sign the aircraft off subsequently, who's responsible then?
2. It's very interesting to read that there appears to be a difference between the English and French interpretation of some of the terms used in Part M.