Your links are dead (or more precisely wounded by Tripod
). Think you’re over your bandwidth limit.
As for windows in spaceships:
Glass and other transparent materials weight a whole lot more than other potential hull materials, so keeping the amount down to the absolute minimum would be the economical way to do it.
Windows are not really necessary anymore either. Put a camera outside and hang a flat screen TV on the wall. Lighter, cheaper and you can watch something else besides empty space once in a while.
And its safe enough. When cameras and TV screens stop working in a spaceship, you will be long dead anyway