Norwegian adventurer Ragnar Thorseth have become quite familiar with the behavior of the polar bears and can sense if they are aggressive or just curious.
Hand feeding them salmon sandwiches with mayo is not problematic when the bear have no interest in having you on the menu, apparently.

I wouldn't be surprised if he soon become the late adventurer Ragnar thorseth...
At least you wont be remembered as a coward. That count for some thing i suppose.