I think "oblivious" is the right word. I have never had a genuine "run-in" with anybody at a launch because I tend to think that most folks don't know any better and are willing to learn if approached in the right manner.

As for people who are obviously just being jerks, I just leave them alone--no amount of talking is going to get them to do things right.

My two cents--and worth every penny!
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Wade

They can have my coffee when they pry it from my cold, dead fingers.