No. I just pointed out your own internal illlogic. You are the one who didn't properly read what you improperly wrote. And you still don't get it despite repeated attempts. (Remember the earlier cognitive deficit diagnosis? There you go.)
I have to agree, the presence of more armed members of the audience would have increased the odds Holmes would have "stopped" killing sooner. One is reminded, though, of the Archie Bunker solution to ending skyjacking: arm all the passengers.
Why would they need to know it in advance? Something wrong with being prepared? Do you buy home owners insurance before or after the house fire? Do you wait for a "rainy day" to start saving money for a "rainy day"? Do you put on a condom after she gets pregnant? Do you put on your seat belt before or after a car crash? This sort of thing happens, always has and always will. No amount of regulation is ever going to stop it. In fact the US already has 22,000 local state and federal gun laws on the books. How many of those laws did the Aurora victims any good?
So the law-abiding citizens broke the law, and had a spell of clairvoyance. Got it. It's so simple when you tie it all together with a bow.