Image via WikipediaThe term darwinism has both scientific and metaphysical dimensions. Metaphysically, it assumes materialism is true and then posits a theory consistent with this assumption. The problem arises when, because of this assumption, arguments are made to the effect that because materialism is true, we know darwinism is surely true and the only truth possible. Because it is true, we know it happened, and when inconvenient facts contradict it (like the demonstrably feeble creative power of undirected random mutation, the improbability of the butterfly, or the exquisite intelligence-laden complexity of the cell), it is because we don't know enough yet. In other words, a belief in Darwin of the gaps.
At any rate, here is cute definition of darwinian evolution designed by Tom Gilson over at
Thinking Christian. You may design a clever response.
"Naturalistic Evolution (def.): the marvelous (presumed) capacity of nature to create the appearance of design, and to produce beings who have the ability to design and to detect design; but which itself has no ability to design, or if it does have that ability, it is forever undetectable."
The last bit is presumably a nod towards theistic darwinian evolutionists. Well done, Tom.