DNS, that's why I said I'd like to know what the shooter said is the reason he chose that particular venue for his attack. But one cannot deny the tactical advantage of going up against an unarmed population. For example: the man who walked around a cop car to get into a gun store, draws, and says "this is a stickup". That Darwin Award is a case of bad tactics by choosing an armed group to rob.
You mean like robbing armored cars, police evidence buildings, burglarizing SWAT vehicles, and probably 99% of the rest of the population? With most states, the number of CCW folks is so low anyway that folks get away with mass events just fine or are stopped long before a CCW person interacts.
That the theater was posted isn't the same as saying that the gunman would have gone up against a group of armed people if the theater wasn't posted.
While one cannot argue against the tactical advantage of going against an unarmed population, that certainly does not mean that the gunman made any sort of conscious decision to do that. For all we know, there were armed people in the theater who opted not to act. At the Tacoma Mall, Dan McKown had a gun but didn't bother to have it drawn when he opted to yell at the shooter who then shot him multiple times, though he was quick to point out how he carried a gun to protect others. Police also reported that there was at least one other person present with a CCW who also did not respond.
At the IHOP shooting in Carson City, NV, the guy on the phone with 911 in the business across the street made a point of telling the operator he had a gun, but he didn't do a darned thing either other than report the event and scream a lot about how bullets were flying. His son actually went outside, unarmed, and warned people on the street to take cover, but the guy with the gun didn't do squat with the gun.
The guy in Carson City, the CCW at the Tucson shooting (who was too late to use a gun but was all over TV talking about how he would have used it), and McKown like to take big about having guns and being ready to protect people and how they are ready to use them, but there are few Mark Wilsons in the world.
Here is the link from my previous thread on gun free zone pseudo myths...
http://www.thehighroad.org/showthread.php?t=674889&highlight=mass+shooting