The document discusses the law of universal variant, which asserts that there is only one precise and accurate law governing the universe. It argues that this law dictates that nothing can be exactly equal or repeated anywhere in the universe, from the microscopic to the macroscopic levels, and that it applies to all aspects of the physical world as well as thoughts, time, space, and energy. The document provides examples across many domains to support this view and argues that mathematics is the only true exact science because all other fields cannot achieve full accuracy due to this universal law of variation.