Protest
C`est La Vie
Just a side point, but a mirror can reflect a laser, so it isn't the same thing as an object with a large amount of mass travelling at the speed of light.
I don't care about the can of worms that can potentially open up because realistically it could have been in any scifi movie with light speed. You could also complain about lack of vacuum in space when needed (Rose's sister, Leia door opening). The bombs could be magnetic or targerted, but the button falling to Rose's sister's hand was clearly gravity where it couldn't exist. It is all mindless action, so just ignore it I guess.
The best complaint about the movie is the useless casino planet half hour mission which was completely unnecessary other than to introduce new toys.
Then why aren't ships made out of mirrors?!?!? This movie is s**t.