As I wrote, it is my experience that christians will say that it is absurd to claim Jesus walked again after he was executed. Do you think that is unreasonable?Only when you blindly deny the Creator.
That may be true but there are no eyewitness accounts of it. In fact there are no eyewitness accounts of Jesus in existence at all, as far as can be known.Indeed, many, many people witnessed Him alive after His resurrection.
The fact that there are disastrous mutations makes no difference to the fact that there are some beneficial ones. And now you know one of the ways that the disastrous ones are filtered out: many organisms are genetically non-viable from the moment of fertilisation, and are lost straight away. Five out of every six fertilised human eggs never make it to implantation, and many of them are genetically non-viable, some because of mutations. Then there are the genetic diseases and cancers that can be caused by spontaneous mutations. They are also in your disastrous category because although development might happen, a fatal condition can result. Then you have mutations that are damaging but not fatal, like our broken gene that means we can't make Vitamin C but have to get it from our diet: many animal species can make their own Vitamin C. And then there are neutral mutations, ones which cause differences in the base sequences that make proteins, but which make no difference to how the protein does its job. As I mentioned earlier, the smaller the change the more likely it is to be one of the rare helpful ones. You could get a big mutation that is a big help, but it's not very likely.The vast majority of mutations are disastrous. The idea that a few "good mutations" here and there can create highly complex interdependent systems, like the human body, is scientifically absurd.... particularly against the vast number of destructive mutations.
Yes, helpful in the sense that once you have a genome, you can have tiny spelling changes that make proteins slightly worse or better, and you have the mechanism that weeds out the bad ones and makes the good ones more frequent. That's what mutation, DNA replication and survival with reproduction can do. It takes timescales that are too difficult for us to really comprehend, which is why it seems to be absurd.Not "helpful" in the sense that they can create highly complex interdependent systems, like the human body.
Well the point is that it did not start as a human body. It started as a thing something like a single-cell organism with a very simple genome. I agree it is astonishing to think that mutations and natural selection can change that into something as complex as a human brain, but if you look closely that is exactly the kind of thing that is going on all the time.Even if it does "keep the good ones", that's not nearly enough to create highly complex interdependent systems, like the human body.
Stuart