system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are plane windows so small?

Why are they all (roughly) the same size? Is there no way to make them larger, so the passengers would have a better view?

I can imagine it being less efficient energy-wise but that doesn’t quite explain why I’ve never seen even one plane with slightly larger windows then all the others.
gpt
It's less a matter of energy and more a matter of structural integrity. Aircraft have to deal with very uneven pressures: as you go up it drops quite a bit outside, but for people to not-die you have to keep it high enough inside.

Every one of those windows is a hole in the hull - sure it's sealed, but that's still a point where there's two different separate materials that are being forced all of the time - that means stress and fatigue around every single one. The seals and separations also affect the airflow - at low speeds like in a car this doesn't do much more than maybe affect how quick you do 0-60 compared to the sports model, but for aircraft that's potentially going to affect range and fuel efficiency. Or, at the very least, cost: It may be possible to make an entirely transparent hull, but with the appropriate strength and properties for a commercial jet?

There's also the issue of what happens if one fails: A nice big window isn't just a bigger weak-spot, if it breaks, that affects how quickly cabin pressure drops - which makes the difference between "we can compensate for this", "we have time to drop down a few thousand feet so folks won't be in danger" and "They're all dead, everybody's dead, everybody is dead, Dave"

There'd be no windows at all if designers were allowed to get away with it.