This is called as "oriented to practice". That is a statement similar to "In a driving school of today there's no explanation of the carburettor." And why should they explain it? A modern car has none. May be there is an electronically controlled injection pump and if that does not work to drive the motor right away it is replaced - and that's that! It's cheaper than searching for the defect and repair it, says the mechanic anyway ond probably he will complain about the lousy firm delivering such a mess. You pay him, take your car and drive away and probably you will complain about that lousy mechanic unable to repair that intrusion automatic (or how did he say?)

move on