In an article written by Martin Melzer, http://www.news24.com/MyNews24/Scientific-Truth-in-the-God-No-God-Debate-2-20130522, published on 22 May 2013, he Melzer writes (what he wrote in his article are in italics; my answers are in bold) : ….there is no acceptable level of proof that evolution operated or was even possible, before life began. http://www.ncbi.nlm.nih.gov/pubmed/9924024?dopt=Abstract Contrary to the claims of the author of that article, there’s nothing unscientific about that. It can be and is constantly tested. For example, we can experimentally test whether the postulated chemical reactions work and can work under the prebiotic conditions postulated to have been present on the early Earth. Hence science.