The process of vertical movement, known as isostasy, was a foundation of geological belief for generations, though no-one had any really good theories as to how or why it happened.

But if there is no reason for the view that all object-senses obtained in experience are misinformative about the world, then there is no ground for rejecting the realist concept of the world […]

A “moving platform” scheme[…]is more technologically ambitious than maglev trains even though it relies on conventional rails. […] Stopping high-speed trains wastes energy and time, so why not simply slow them down enough for a moving platform to pull alongside?

Accordingly, we varied HIV transmission probability per coital act, duration of each HIV stage, frequency of coital acts per HIV stage, duration of partnership, degree of assortativeness, scale parameter in the gamma distribution of the population across the risk groups, and exponent parameter in the power-law function of the distribution of sexual-risk behavior.