They are a bit old fashioned in the UK and still think people should take care when working on their bikes.
There is no amount of foolproofing that can thwart the creativity of mankind. In an electrical class once, the instructor was going on about how unsafe it is that North American house fuses are interchangable and how wonderful it is that Euro fuses are not. A German student chimed in and said, "You know vat ve do? Ve trife a nail trew de fusse."