[Illustrations, footnotes and references available in PDF version]
This well at Kom Umbu on the banks of the Nile River was built in Roman times. It was connected to the river. The relationship could be calculated between the number of steps inundated each year and the extent of the area that was inundated by beneficial flood water, and was therefore taxable,. This was the world’s first prediction model!
Today in some Western nations, taxes are levied to control greenhouse gas emissions into the atmosphere that are claimed to result in undesirable climate change.