[Mr Ramsbotham]

Cave men painting for the gods? Not necessarily. Sir James Fraser, the great anthropologist postured that primitive beliefs center around two overriding principles: like begets like and contagion. With the former, if you jump up and down while planting your seeds, the plants are liable to grow very tall; if you draw a picture of an animal you are accustomed to hunting and place a spear in a critical area of the pictured animal, you'll have an equal measure of success in the actual hunt.

[RightWhale]

if you draw a picture of an animal you are accustomed to hunting and place a spear in a critical area of the pictured animal

Hm. Thought I was the only one to do that.

[SunkenCiv]

if you draw a picture of an animal you are accustomed to hunting and place a spear in a critical area of the pictured animal, you'll have an equal measure of success in the actual hunt.

A good possibility IMHO.