We went to the ICR museum in Dallas. They had some portraits of scientists on the wall. Suddenly the “pictures” started to talk with each other. Screens are good enough now that I think most passengers will be okay without windows. The bulk of them pull the shades down the moment they take their seats, never to open them again. This may actually make construction easier. But access to maintenance items - that is an issue. My grandkids may see it in their lifetimes.