In message , Andy Hall
writes

Accidents do occasionally happen. Yes, they do, that's why they are
called accidents.
But downright ignorance to the possible dangers of your actions is not
an accident.

The question then becomes one of whether an amount of training and an
exam constitute competence.

I used to have a customer who had been on all the courses, passed exams,
had a car full of boiler manuals and course notes.

He was totally useless

--
geoff