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It might also have to do with the fact that a window is more expensive, but required for ovens and microwaves as food night burn otherwise, but usually there's no issue running a dishwasher longer than exactly required
It’s definitely not required for ovens. You can just open the oven. Source: previous oven (1950s vintage) didn’t have one.
Pretty useful though, and pretty important on microwaves too since you can’t safely open the [microwave] oven while it’s running.
You can open it but you every time you do, you lose heat, which has to be compensated for by the oven. A window makes the process much easier. There wouldn't really be measurable gains for a dishwasher
That person has never cooked a souffle.
How's it not safe to open the oven while running? Just don't touch anything without mitts and keep your face back.
They meant the microwave
Yes. Microwave is short for “microwave oven”. I thought it was clear from context but I guess not.