The term often leads into confusion, however, since international compact cars are somewhat larger than their North American equivalents, mostly because no supermini/subcompact size is manufactured by American, Mexican and Canadian car makers up to date.
By the late 1860's, Darwin came to describe this process as the survival of the fittest. This is very different from Lamarck's incorrect idea that the environment altered the shape of individuals and that these acquired changes were then inherited.
Darwin and the Fit. Charles Darwin published On the Origin of Species which included the oft misquoted line 'survival of the fit.' Fit, not fittest, was originally written. The idea here was that one merely needed to be fit enough to reproduce to pass on its genetics in the form of a new generation.