It's October, and an Indian chief thinks it's going to be a cold
winter. So he instructs his tribe to collect firewood. To
double-check his prediction, the chief calls the National
Weather Service and asks a meteorologist if the winter is going
to be a cold one.

The man responds, "According to our indicators, we think it
might."

So the chief tells his people to find extra wood, just in case.
A week later he calls the National Weather Service again, and
they confirm that a harsh winter is headed their way.

The chief orders all of his people to scavenge every scrap of
wood they can. Two weeks later he calls the National Weather
Service again and asks, "Are you absolutely sure this winter is
going to be very cold?"

"Absolutely," the man replies. "The Indians are collecting wood
like crazy."