Windows in spaceships
A spaceship must have windows! Astronauts must be able to look outside at the universe with their own eyes...
But...
Windows are very heavy (a weight penalty), fragile , very often scratched or damp. They even can cause leaks!
And what do astronauts see anyway? Other than the Earth or the Moon...nothing but black.
So why not build a CEV without windows?
Astronauts would be able to see outside through a video in their helmet (or a laptop) and cameras mounted outside could provide them with a great view (even corrected ).
Raoul