[TeMPOraL]

Might also be because people misuse the dishwasher a lot - by overloading the machine past capacity, and then running an underpowered (or "eco") program. All those other programs are on the dishwasher for a reason, and it's not to trick the user into wasting more water.

[Scoundreller]

Another mistake is thinking the 1h cycle is the most efficient. It is not. Uses more water and electricity than a normal cycle.