Wow, so much bunk and so little memory to process it all.
Well, lets start with this situational awarness argument. For those of you who believe that New Master should have been aware of his surrounding, and should have been caught off guard, simply do not understand the complexities of real life.
Let us say the New Maser WAS scanning 360. That should take what, a minimum of two (2) seconds for each scan? (Yeah, I know that's an unrealisticly short peiorid of time, given the busy parking lot, but bear with me.) Okay, two seconds. Now does everyone remember the Tueller Drill? If not, do a search, you'll get plenty of hits. Anyway, the Tueller drill stipulates that an attacker can cover 21 feet of distance in and average of 1.5 seconds, giving you (the defender) 1.5 seconds to deploy your defenses (i.e. handgun), providing you actually know an attack is imminent.
When walking though a busy parking lot, I pass MANY people within 21 feet. It happens, trust me. Even supposing that two second 360 scan, that gives anyone I pass an extra half second to jump me. Even given heightened awarness, it is not feasible to survey every possible threat (i.e. every person and vehicle in the parking lot) all the time.
Second (and in no particular order), Costco doesn't check every item in your cart against the receipt. They don't have enough time, nor employees. Neither does Best Buy, Curcuit City, Fry's etc. AT best they check for big ticket items or high theft items. None of them check 100% of the customers that leave the front door. Not even Costco, where if you purchase from the photo or optical departments, you can leave through the entrance and no one will even say good bye.
Third, the right to detain typically ends at the doors, just like your right to defend your home also ends at your doors. Shoot a burglar in your living room, and you are probably within your rights. Shoot that burglar on your front lawn, and you will probably face serious legal issues. Stores exercise no control over the ingress and egress of their parking lot, unlike their stores.
Fourth, nowhere in the "Social Contract" does it mention "we will assault you if we don't like what you do in our store."
Fifth, Costco declared in public that New Master was a thief. That is libel and actionable. Further, they acted in a manner designed to cause bodily harm. Costco needs to understand that this is unacceptable behavior.
Sixth, why are people so ready to assume New Master is lying, either directly or through omission? In all probability, that is the whole story as he knows it, and you cannot expect him to tell otherwise. I do not know who New Master is, nor have I ever been to Minnisota (that's MN, right?) but I find no reason to doubt his story, neither in its original telling nor in the adeed facts given later. OF COURSE I reserve the right to change my opinion should other facts arise, but as given I STILL SAY I WOULD PROBABLY HAVE DONE THE SAME THING.
I probably had other things to say, but it's late and I'm tired.