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Johnson & Darwin

A critique of “Darwin on Trial” by Phillip E. Johnson, publ. Monarch, 1991, pp. 195 incl. research notes and index.

Purposelessness A critique of “Darwin on Trial” by Phillip E. Johnson, publ. Monarch, 1991, pp. 195 incl. research notes and index. This is a book I have long put off reading as too many books written by Christians attacking Evolution are dire and have brought disgrace and dishonour on the Gospel. This one, written by an American Professor of Law, is different. His keen legal mind has allowed him to spot the flaws in the way Evolution is usually presented in the textbooks and the media. A brief summary of the book would be that too much has been claimed to be understood too soon without enough supporting evidence. For example, we still don’t yet understand the origin of life itself from non-living matter, though there are some ideas around (see Seven Clues to the Origin of Life by A.G. Cairns-Smith, publ. Cambridge Univ. Press, 1985). Darwin’s book was about the origin of species from pre-existing species. However, the book has a number of major flaws. For instance, contrary to what Johnson asserts on page 48, Darwin’s theory did not ‘sweep all before it’. Instead The Origin of Species acted as a catalyst for the acceptance of the older idea of developmental evolution (see below). Darwin himself was not consistent on this point. The ‘Modern Synthesis’ took place in the middle of the 20th century after the mechanism of heredity was understood. It brought together the various biological sciences which had conflicting models of evolution up to that time. This confusion of ‘evolution’ with ‘Darwinism’ is repeated on page 63. Evolution (or change), testified to by the present geographical distribution of species and the presence of extinct species in the rocks, are the facts that needed a theory to explain them. Johnson also claims (on pages 68-72) that too great an extrapolation is made from micro-evolution (variation within species), which can be observed to happen, to macro-evolution (the generation of new species). However, the genetic variation within species can be just as great as that between species. The reason biologists reckon evolution is proved by micro-evolution is that the small variations between individuals are sufficient for Darwin’s mechanism to work. Johnson also makes the classic and widespread mistake of disparaging theory. Theories in science come in all sorts of shapes and sizes. Low-level ones deal with specific and narrow classes of things (an example would be the theory of beams in Engineering). Such theories are usually constructed by making approximations to make the problem tractable and analysable. They are ‘good-enough’ for most practical purposes. High-level ones, on the other hand, result in the understanding of a wide range of phenomena (examples would be Electromagnetism or Quantum Mechanics). Darwin’s theory belongs in the high-level category in that it offers an explanation of a large number of observations in the biological world. Without such high- level theories, observations remain disjoint, puzzling and unexplained. Theory in this sense has a high status not a low one (as many people think). Having said this, Darwin’s theory (like all theories) is provisional and could be replaced by a new theory that explains more observations. In discussing the fossil record, Johnson does not seem to have got to grips with the divergent nature of family trees. Divergent processes will not leave a neat genealogy in the fossil record for us to uncover. Indeed, the probability of any of the individual fossil organisms we find in the rocks being one of our direct ancestors is close to zero because only a tiny minority of all the organisms alive at any one time are turned into fossils as preservation only occurs in very unusual circumstances. The other flaws revolve around history: the history of evolutionary thought and the failure to understand that Darwinism is really about the replacement of one idea (that the biological world develops like a machine following a set of blueprints) with another idea (life has a history analogous to that familiar to us from human history, and therefore its progress cannot be predicted even in principle). So when as Christians we think about evolution, we ought to consider what the Bible says about history (admittedly human history with agents who have purposes in mind). Key passages are Isaiah 45: 1; Acts 4: 27,28; Acts 17: 26,27. It is quite possible and legitimate to write history without involving God, for Cyrus and Pilate had no clue they were carrying out God’s will. To understand what is going on from God’s perspective, prophetic insight is necessary. The same is true of creation (Isaiah 45: 18,19). The purpose for which the universe was brought into existence cannot be discovered by wisdom or knowledge (1 Corinthians 1: 19-31). We need the Creator to tell us the purpose, and the claim of the biblical writers is that He has. Ultimately the matter is one of faith. Our problem with evolution is not whether it’s true or not but rather that we are not satisfied with the sign of Jonah. The incarnation of the Word of God, His atoning sacrifice for our sins on the Cross, His vindication by resurrection from the dead, and the pouring out of the Holy Spirit are not enough for us! We want more evidence that there is a God at work in the world! Our faith is weak and we glory in that. People say “My faith is not strong enough to believe evolution”. But the Lord never commended anyone for the smallness of their faith. Although God’s power is seen in what has been made (Romans 1: 20), He hides Himself (Isaiah 45: 15). We on the other hand want there to be evidence in nature to convert us. But as Blaise Pascal pointed out, such evidence cannot convert us to serve God. Only the Gospel can. Stephen Walley