dishwasher/laundry machine dials

why why why. please explain why if you happen to go past the point you want, you can't just click it back, you have to spin it an entire rotation around. by this point you're so frustrated that you spin it faster than before, and you probably miss again. so it's a silly game of spin the dial, like some sick carnival game where if you win, you get clean clothes. who has time for the dials and WHY CANT THEY SPIN THE OTHER WAY????