Counterintuitiveness makes life more interesting. It also briefly reveals gaps or lags in our understanding or mindsets.
A recent article, and probably many before that, states how pre-rinsing dishes before putting them in the dishwasher actually reduces the cleansing quality.
Modern dishwashers have sensors that gauge the degree of dirt and adjust the amount of cleaning accordingly.
So the old, habitual pre-rinsing could trick the machine into thinking a mild clean should suffice.
But for those of you who own dishwashers and are used to mildly rinsing your dishes in advance, you surely sense this huge internal conflict each time you are done eating and before you put those plates and cutlery in the machine.