Pretend you’re the biggest manufacturer of gearshifts and mechanical accessories for bicycles. You invent a fantastic range of hub-mounted electric generators for bicycles, which are intended to power the lights as a person pedals along. Your products are reliable, long-lasting, and mostly free of required maintenance. But you decide to skimp on a sensible mechanical connector for the electrical output from your generator products, instead asking the dumbest junior engineer in the office to design a connector for you. What would that look like?
Probably something like this (from source):
A friction-fit cable connection where you pray that the wires don’t cross and that the wires are thick enough to rub against the generator contacts tightly enough.
Are you kidding me, Shimano? Please, please, please, for the love of God, talk to these people.