In a review published by The Skeptics Society titled "Stephen Meyer's Fumbling Bumbling Amateur Cambrian Follies", paleontologist Donald Prothero gave a highly negative review of Meyer's book. Prothero pointed out that the "Cambrian Explosion" concept itself has been deemed an outdated concept after recent decades of fossil discovery and he points out that 'Cambrian diversification' is a more consensual term now used in paleontology to describe the 80 million-year time frame where the fossil record shows the gradual and stepwise evolution of more and more complicated animal life. Prothero criticizes Meyer for ignoring much of the fossil record and instead focusing on a later stage to give the impression that all Cambrian life forms appeared abruptly without predecessors. In contrast, Prothero cites paleontologist B.S. Lieberman that the rates of evolution during the 'Cambrian explosion' were typical of any adaptive radiation in life's history. He quotes another prominent paleontologist Andrew Knoll that '20 million years is a long time for organisms that produce a new generation every year or two' without the need to invoke any unknown processes. Going through a list of topics in modern evolutionary biology Meyer used to bolster his idea in the book, Prothero asserts that Meyer, not a paleontologist nor a molecular biologist, does not understand these scientific disciplines, therefore he misinterprets, distorts and confuses the data, all for the purpose of promoting the 'God of the gaps' argument: 'anything that is currently not easily explained by science is automatically attributed to supernatural causes', i.e. intelligent design.