What do you know?

You are a modern man or woman, the heir of the wisdom and technical expertise of countless of generations, or are you? Perhaps you really know less than an average hunter gatherer thousands of years ago, or much less than a pioneer did just 150 years ago.

Do you know the names of any of the rivers or streams in your neighborhood. Do you even know where they are, where they flow to?

Do you know how to find fresh clean drinking water or treat dirty water? Do you know how to store it?

Do you know the names of any plants or trees in your area? Which ones are good for eating? Which ones are good for construction? Do you know when to plant or how to harvest any food crops? Do you know how to mill and shape a tree into lumber?

Do you know how to obtain or refine minerals like Copper or Iron; Utzi the Iceman knew about copper 5,000+ years ago.

Could you make a canoe? A boat? If you could, how would you sail? Do you know anything about the stars or navigation?

Do you know how to cut and shape stone? Even something soft like sandstone?

Could you make a clay pot like your ancestors could for thousands of years?

The list goes on and on, of course. If you have any practical knowledge, you are a rare creature, indeed. If you have none, and chances are you don't, what has civilization made you?