This event happened during the last seminar of FEES. Meeting at breakfast time, two executive board members told the others that they had been burnt by the shower (in fact, alternatively burnt and frozen). For the two members, the design of the water mixer tap was counter-intuitive, although for the others, it was regular. The exchanges showed that the two members had never been confronted with the water mixer tap without signs on it (red or blue). They told the story: “I went in the shower area and saw the taps, one at each extremity of the ramp. I was under the main shower head, immediately over my head. As there was no indication on the taps, I began with the right one. I turned it upside down and was surprised and frozen by the very cold water from the main shower. I immediately turned it the opposite, and then the flow came to the small shower head, heading to the wall. It was still cold water. Then I tried the left tap. As nothing was indicated on the tap, I turned it upside, then downside, and settled it to the desired temperature. Then, I changed the orientation of the flow to the main shower head on the ceiling. It worked…. Until someone in the rooms around mine used its shower. The flow instantly changed from warm to iceberg.
Surprised, I put my hand on the left tap and tried to raise the heat…. But too strongly. Ouch!”