He later gave up vest and fish to a hungry grizzly. Most stupid human tricks end without incident. But not always. Last year 297 people died in America's national parks. In many cases, the cause was a fall from an overlook or a cliff, or a drowning.
Car accidents are also a prime factor.
Unfortunate motorists have driven off the road while admiring the view, or stopped in the middle of the road to sightsee, only to be hit from behind. Park experts have their theories as to why people take risks, especially when it comes to animal encounters. They want that picture and go to extremes to get it, including extending their hand. People have a false sense of security. It ain't Disneyland.