DFW said:
			
		
	
	
		
		
			
	
		
			
				BP said:
			
		
	
	
		
		
			In a systems failure (probably complete - like P.P. and emergencies failure), optical viewport 
might be useful when EVA is ill advised just for looking.  I.e. - seeing what the h... just happened to the outside of the ship! 
 
		 
In all likely hood looking out a window that is flush, or more likely, set deep into the hull, will show you nothing about what happened to your ship.  To take a look, if all systems are down would require an EVA anyway.
In an airliner, the pilots can't see anything of the fuselage by looking out the cockpit windows either.
		
 
		
	 
Quite true - hence the use of the italic 'might' 
 
Ex: looking out the windows of a plane might confirm the tip of a wing just fell off...
Not saying this is necessarily overly useful info to have... though a fighter or gunner's turret could confirm useful things - like weapon's stanchions missing, landing gear not deployed, etc.
Just like today (
rust's commercial airliner example; houses that don't take advantage of earth as a heat sink or natural insulating building materials; consumer cars) designs 
very often are inefficient, silly or down-right unsafe.