In my latest interest in Ancestry.com and tracking the roots of my ancestors, I happened upon an interesting feature of the site - maps of birth locations.
Here is just the U.S. map of seven generations of the 122 ancestors I have attached to my family tree.
It would be fascinating to visualize the movement by generation (probably a future enhancement to the software) from birth to death. What it shows is how much mobility occurs as time marches on. In biblical times there was also significant movement (i.e. famine, slavery, refuge, etc.).
What it proves? - Life marches on. The human explorer. The young and the restless.