You don't want to see it.

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.

Obligatory Technology Connections

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.

this Capitalization is Giving me a Fucking stroke

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.

It's to keep people from seeing the reality of recycled dishwater being sprayed at the plates you eat off of.

I have a countertop dishwasher that has a giant window in the front. Wanna know what's in there?

Bubble bath shower for the dishes. It looks fun.

My washer and dryer have tinted windows. I have no idea why. I'm guessing their chief designer drives a heavily modded Scion though.

Why do they call it oven when you of in the cold food of out hot eat the food?

Table top dishwashers usually have a window. My kid considered it a major disadvantage when we got a real dishwasher that the window was missing.

I saw a see through dishwasher at a department store when i was a kid. a demo thingy. it was magical

The Sears appliance departments usually had at least one with a clear front for demonstration purposes.. But you know what happened to them

There are good reasons to hide what's going on inside. Some are simply not prepared: https://www.instagram.com/reel/DIKJ6n-vSKt/

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.

The reason you dont is because it would probably disturb people to see their dishes slamming into each other.

My wife only said "Don't you dare". And now i'm confused. The words imply a dare, her tone sounded like a threat

The dishes want some privacy in their bath.

This is oddly rhythmical/musical.

Why tho'? Apart from curiosity, what do you need to see? How will you utilize the information?

In an oven you can check on the food, and to a certain extent in the MW.