For the purposes of saving water, your dishes are repeatedly washed in dirty greasy brown water before rinsing. This does not look good, but in fact it is alright.
Reading though the comments I think something I said earlier today is going to be true. Technology Connections is going to be the XKCD of video explainers.
Duh. If they let you see how it's done, then you'll know how to do it yourself. And once you know how to do it yourself, you won't need to buy one of their expensive machines every time you want to wash dishes.
Knowing how "fun" it is to make a truly watertight window, even with low pressure, matching both cold and hot and detergent and whatever's flying in there, I'm glad there isn't a glass pane to view into the dishwasher.
Also, I'm usually doing things that are not reliant on seeing what's happening in a dishwasher when it is running, so the cost effectiveness would not be great there.
I remember a while back discovering GE made a clear door that could be used for diagnostic purposes on some dishwashers they had built. Never got to try one out, just thought it was cool they made em.
Hell yeah ... just like washing machines ... I'd love to be able to see what's going on side a dish washer ... even put LED lights on inside it and do a light show ... or control the lighting so that you can turn it on and off if you want
I was once helping a previous landlord install a new dishwasher and during the first test cycle I opened it and he yelled “NO WHAT ARE YOU DOING”. Turns out he thought they filled up with water like a clothes washer. A window really would have helped him.
I'm actually more pissed off that here in 2025 we haven't developed a dishwasher that has a blow dry cycle. Like, just have a small water tight door that flips open to reveal a fan that circulates warm air to dry the dishes.
But no, instead we have the dubious development of dishwashers that no longer have a cup for the prewash soap (which is still 100% necessary) because those stupid pods exist and on some models all the indicator lights have been relocated to the inside of the door where you can't see if the cycle is done unless you open the door which, if the dishwasher is still in the middle of washing, will disrupt the cycle.
My new washing machine has a window on the top and it's pretty cool watching how fast things whip around during the spin cycle. Definitely have a greater appreciation for the amount of force those things put out.