Something worth keeping in mind is that we are learning that fatal black bear encounters appear to mainly be the result of predatory males, so being able to recognize predatory (as opposed to curious or defensive) behaviour is important.

Check out this video from Dr. Stephen Herrero: http://www.youtube.com/watch?v=4kjuMqCL6kk
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Victory awaits him who has everything in order — luck, people call it. Defeat is certain for him who has neglected to take the necessary precautions in time; this is called bad luck. Roald Amundsen