Comment Re:It's not "Han shoots FIRST"! (Score 2) 210
First implies an order.
First can also imply pre-emption. A nuclear first strike, for example, is intended to knock out the other guy's arsenal so that there is no counter, no second attack.
First can mean "before some other thing, event, etc.: If you're going, phone first." Or "[b]efore or above all others in time, order, rank, or importance: arrived first; forgot to light the oven first.". Or "[b]efore anything else; firstly. Clean the sink first, before you even think of starting to cook..
"Han shot first" is quite grammatically correct.