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's use of the phrase survival of the fittest is frequently misunderstood. Many people assume that the fittest refers to the strongest, biggest, or smartest and most cunning individuals. This may or may not be the case.