Laminar flow
I appreciate that lever taps are mechanically simpler to use. A flick will always use fewer muscles and tendons than a twisting motion. Though I am worried about how this labour saving subtracts yet another bit of incidental exercise from my morning bathroom visit.
It also makes it harder to adjust the tap to get just the right amount of pressure from the tap to create a laminar flow. I have spent hours doing this over my lifetime. Much harder with a lever tap; it is almost as if creating a turbulent flow was a design decision that was made when the lever tap was invented.
Those of you of a certain age and viewing habits will know of Kenny Everett. Apparently he loved polishing bathroom taps. So much so that, if I remember right, his wife bought him taps to polish. I get it, Kenny. I get it.

mmmm………..laminar



