Creationist author Darek Isaacs has come up with a baffling counter-argument to the theory of evolution, claiming that if it is true it must mean that rape is OK.

A believer in the Bible's version of events, Isaacs appeared on Monday's edition of online show 'Creation Today', where he made the ridiculous claims to its stunned hosts.

Discussing his new book, Isaacs asks: "If evolution were true, then how now shall we live?", explaining how his research led him to study "purveyors of evolutionary thought" like Charles Darwin, Richard Dawkins and Christopher Hitchens and reach a "very, very dark place" that forced him to ask a lot of "hard questions".

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“You have to start asking questions: Well, if evolution is true, and it’s just all about the male propagating their DNA, we had to ask hard questions, like, well, is rape wrong?” he says to an "oh my" from one of the hosts.

He continues: "Evolution is about the man propagating their DNA, and applying evolutionary thought to humanity then it’s basically the strongest male takes whoever he can to propagate the DNA, and it is a scary outcome."

Somehow managing to conflate the 'survival of the fittest' logic of evolution with rape, Isaacs goes on to claim that marriage is "anathema" to the theory because it limits sex to being between one man and one woman.

"According to the evolutionary worldview, [if] that male is strong enough and he had wonderful genes, he should propagate his DNA as much as possible so that the species can progress," Isaacs adds. "So it redefines everything about our society."

Isaacs is also the author of 'Dragons or Dinosaurs', a book in which he makes another drastic leap, claiming that the reptiles "could they be one and the same" - "a powerful truth that confirms biblical authority and demolishes the theory of evolution".