Isn’t it obvious that the people who invented those crazy faucets that you have to wave your hands in front of to make them work have never made wudhu in their lives? Especially the ones where the soap dispenser is also the same way, so that when you go to wash your arms, your elbow goes in front of the soap and sets it off. Same with the faucets that you press one time and the water goes for five seconds and then you have to press it again. Especially when the hot and cold water come from separate faucets. Those inventors should be required to make wudhu in those sinks before they market them!