Response: Debunking Creationist Myths Part 1
October 10th, 2008Firstly thank you to Stuart Richie for bringing an insightful talk about the scientific evidence for evolution. We are grateful that he went into some detail about the scientific evidence as this gives ground for discussion. Below is a brief response to his opening points, more will follow as we get time:
1. The Extent of Acceptance of Creationist Claims
Stuart gave statistics which showed 48% of adults in the UK believe evolution, 13% are unsure and 39% of adults doubt it. Additionally 30% of students doubt it. Stuart claimed this is because of the prevalence of Creationist teaching. However compared to the teaching of evolution the teaching of creation is not prevalent. The size of these numbers suggest that the majority of the people who reject Darwin would not be found in church or a mosque. The BBC states that in 2006 only 6.3% of the UK population attends church while 3.1% are Muslims. Add to this that the previous Pope has said evolution is: ‘more than a hypothesis’ and the Archbishop of Canterbury Rowan Williams has apologised to Charles Darwin. So the claim that the established church is aggressively pushing Creationism is unfounded. Creationists have not been given the same access to the mass media as evolution’s promoters like Richard Dawkins. There are groups like Edinburgh Creation Group that promote creation at a grass roots level but we cannot be given the credit for the fact that evolution is believed by only by a minority of people in the UK.
The best explanation of these figures is that many people reject the claims of evolution having only heard the positive case put for it and not the argument against it. It also suggests that if mainstream churches promoted Intelligent Design the majority of people would not think less of them for doing so. If we can win so many people without putting our case, then what will happen when we do put our case clearly?
2. Micro and Macro-Evolution
Stuart made the case that micro-evolution (the changes we observe today between children and their parents) shows that evolution is responsible for the large differences we see between different kinds of animals. However the changes we see between parents and their offspring can mostly be explained by inherited characteristics (that is pre-existing features borrowed from previous generations). These are not new features which are moving a species forward into a new kind of creature but pre-existing characteristics being displayed in new combinations. So some animals of the same kind have long hair, others short hair, some black hair and some brown. The blueprint of the creature stays the same but parameters such as size, colour, texture and strength change. In order to get a new kind of creature you cannot simply shuffle existing genes you need to generate new genetic code by mutation (by mistake) each of these small changes needs to be favourable in order to be preserved by natural selection. It is this mechanism which creationists claim is unproven. An example of a new feature that would be very difficult to evolve would be the lungs of birds (see video: Design Information and the Word of Godstart at 13min 30sec).
It is not surprising when we take two working modular computer programs with the same blueprint and swap corresponding parts that you get a third working system. However it is very surprising if we type random letters into a piece of working code and get a new piece of working code that does something new. In order to make functional changes to a computer program you have to make several changes at the same time e.g. misspelling a command by a single letter will cause the code not to run. In order to add a new command you also need to add valid parameters. If DNA is code is similar to computer code then generating new code by adding random changes is a fundamentally different process from swapping existing pieces of code which are known work and known to perform the compatible functions. Proof of micro-evolution is not proof of macro-evolution. For more on this subject see Kirk Durston’s video on Intelligent Design where he shows how we can mathematically quantify the difficulty of achieving different steps of evolution.
more soon …