 Second, as noted above, both for internal and external reasons, Creationists realized that they needed to tread carefully in outright opposition to evolution of all kinds. Could it really be that Noah’s Ark carried all of the animals that we find on earth today? It would be much easier if the Ark carried only the basic “kinds” of Creation, and then after the Flood the animals dispersed and diversified. We find in fact then that although Creationists were (and are) adamantly opposed to unified common descent and to the idea of natural change being adequate for all the forms we see today, from early on they were accepting huge amounts of what can only truly be called evolution! This said, Creationists were convinced that this change occurs much more rapidly than most conventional evolutionists would allow. Although it took some time to formulate, gradually we see emerging the strategy of (what we have seen as) distinguishing between what is called “microevolution” and “macroevolution.” Supposedly, microevolution is the sort of thing that brought diversification to Darwin’s finches, and many Creationists – notwithstanding the fact that it is supposedly a tautology – are even prepared to put this down to natural selection. Macroevolution is what makes reptiles reptiles, and mammals mammals. This cannot be a natural process but required miracles during the days of Creation. Although he was a lifelong opponent of Creationism (see below), forever committed to common descent, and thought that all changes must be natural, Creationists seized with glee on paleontologist Stephen Jay Gould’s claims that microevolution must be selection-fueled and macroevolution might require other causal forces (Gould 1980).