A story about evidence
There were two traders who used to cross the desert in Kenya, carrying incense from one city to another and metalwork back the other way. The trip was a long and hot one, and they travelled with two camels each and always with just a bit more food and water than they strictly needed. For many years their trade carried on successfully - occasionally with a sandstorm, once losing some goods and camels to a thief, but never with a real crisis. Their wealth gradually accumulated, and they were able to expand their caravan to six and eventually ten camels; but no matter how rich they became, they never forgot to carry an extra waterskin and packet of cured beef: they were wise enough to know that riches cannot stop you dying of thirst. But still it came to pass that on one difficult trip, the wind was strong and they had to camp for an extra day; when they reached the next oasis it was dry; and the spare water was soon gone. With three days to walk to the next water, and the sun stronger th...