[antisthenes]

> Any food garbage is supposed to be scraped off roughly (ie scrape off actual pieces of food but dont worry if a few rice stick to the plate).

This is the part that takes 80% of the time, because you have to bring every dish to the garbage can that might not necessarily be next to a dishwasher.

> Dishwashers save on water and energy.

Both of which are negligible compared to the amount of water used for, say, heating and showering (not to mention the water that goes into agriculture for food you eat).

> Anyone who is sceptical of dishwashers and their merits needs to watch the Technology Connections video on dishwashers.

Or they just use very few dishes and figured out a method that works for them.