Adventures in plumbing 2

I've replaced a handheld shower head yesterday. The operation is simplicity itself, no knowledge or tools needed. However, the design of the showerhead itself is an interesting thing to contemplate.

The head is an interesting example of marketing and engineering uniting their forces agains UI designer. It has a number of settings for the way water comes out. The setting are switched by rotating the wheel placed around the entire head.

Now, the two most used settings are "normal" shower and "shut off" (AKA "trickle"). The design should make it very easy to switch between them. But the engineering had an elegant implementation where the "off" and "normal" were at the opposite ends of the rotation. And then marketing made it worse by specifying that the switching wheel must look smooth and polished.

So now I have to rotate the ring more than 180 degrees, going through settings that spew water with considerable forse. And then I have to rotate it all the way back, with soapy hands.

Someone is obviously not eating their own dog food.