The math of a subject is only valuable when one understands the basic terminology of the subject. As Chris points out, knowing when to use statistics (the basic assumptions and what the word applies to) makes something like the Doomsday Arguement good for a laugh. It is ridiculous. On evolutionary biology-- Evolution is defined as " any change in the frequency of alleles within a gene pool from one generation to the next." This frequency changes with each birth. So to make the definition into regular English we could say Evolution is defined as "living things reproduce" (the fact of evolution). In modem evolutionary genetics, natural selection is defined as "the differential reproduction of genotypes (individuals of some genotypes have more offspring than those of others)". In English- some cats have more babies than other cats. So the statement "It is a fact that some cats have more babies than other cats," would be the proof of evolution by natural selection as the terms are currently defined. Doesn't that help more than a mathematical equation?