The philosopher and historian of biology, Michael T. Ghiselin, writing in "The New York Times", comments that Dawkins "succeeds admirably in showing how natural selection allows biologists to dispense with such notions as purpose and design". He notes that analogies with computer programs have their limitations, but are still useful. Ghiselin observes that Dawkins is "NOT content with rebutting creationists" but goes on to press home his arguments against alternative theories to neo-Darwinism. He thinks the book fills the need to know more about evolution "that others would conceal from them." He concludes that "Readers who are not outraged will be delighted."