Normalizing and fitting arbitrary curves to unqualified "data" is meaningless. I wonder how this is related to the temporal diversity of the heights of the pyramids of Kufu, Menkare, and Josher? This was also related to climate (Nile flooding or not) and economy (resources available after squandering on monuments and wars). It would be more credible if they started from a meaningful hypothesis and then determined how well the observations fit. I am curve fitting to prices on the lunch menu in order to determine whether global warming will influence my choice.
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