An explorer in the deepest Amazon suddenly finds himself surrounded by a
bloodthirsty group of cannibals. Upon surveying the situation, he says
quietly to himself,

"Oh no! I'm doomed."

There is a ray of light from the sky above and a voice booms out:

"No my son, you are NOT doomed. Pick up that stone at your feet and bash
in the head of the chief standing in front of you."

So the explorer picks up the stone and attacks the chief, feverishly
bashing at his head with all his strength. He stands above the lifeless
body, breathing heavily and surrounded by 100 cannibals with a look of
shock on their faces.

The voice booms out again:

"Okay ? NOW you're doomed."