I think discipline is the bigger issue than awareness. Even someone who absolutely knows better can end up thinking that the bad thing can't happen to them.
In my experience with experts I'd say especially someone who "knows better" can end up thinking that the bad thing can't happen to them right up until they, in a fit of being human, have an oops and it does.
Yeah. I hate this 'holier than thou' attitude that some folks on this thread are displaying. We are all human, and we all do stupid things based on our psychology. The best we can do is create systems to help guard against our own mistakes.
"The best we can do is create systems to help guard against our own mistakes."
Like enforced isolation of some kind? The thing that people have been asking for since the beginning, but is a bad idea for some reason that nobody can explain?