Hamilton Beach coffee bean grinder with "ON button".
This appliance is not intended for use by persons with
reduced physical, sensory, or mental capabilities, or lack of
experience and knowledge, unless they are closely supervised
and instructed concerning use of the appliance by a person
responsible for their safety.
If operating a device always must requires experience operating that device, no one can operate it.
Who has experience operate the device, absolutely need be ignoring the rule first.
Operating an ON button, is, unfortunately, way beyond my skill level. That's why I've bridged the ON button with a wire and now I just leave my coffee grinder on all the time. It gets annoying at night sometimes, but I'll happily sacrifice some sleep for safety and leave complex devices to trained experts who know what they are doing.
Ahh, so you've got the polarized plug jammed into the socket the wrong way around so it can't be inadvertently pulled out of the socket by the untrained.