For Christians (or anyone else) who deny Darwinian evolution.

[I_am_not_mafia]

The mechanism is not understood.

I find it amazing how religionists like Stevell and Godschild will just blatantly say something to be the true because they wish it were. Yes, the mechanisms in evolution are well understood. Just because it is being ever refined does not mean to say that it is not understood. It has been this way for a while now. The theory of evolution has been tested many times, both in theory using computer programs and in practice through experiments with breeding animals, on bacteria, and through observations in the wild.

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Also, mutations increase the information content.

 No it's not you've been fooled and/or brainwashed into think it can be tested and it's only a theory.

 Mutations are a loss of information not a gain, the loss comes from what is already there and it's actually not loss, it's replaced by something else already there. No new info at all, period.

I learnt this from the scientific literature where papers are written based on reproducible evidence. I have used this to practical effect myself for many years.

If you start with a completely randomised population of genotypes then using only the crossover operator you will end up with a far less varied population over time, even if you do not have a fitness function acting as selective pressure. Only the mutation operator can increase the information content of the genotype.

You need to know this to understand how to design your genetic algorithm and how to set your mutation rate.

You on the other hand Godscreated are just reading this from creationist authors who do not understand the theory of evolution and wish it did not exist.

It is clear that neither you nor the creationist authors you parrot even understand the well defined concept of information.