 Originally Posted by invader_tech
Elaborate on that please.
Alextanium already very well explained it pretty much. (Thanks)
edit: okay, what I did was basically list a few problems that exist with the concept of soul, not strictly evolution-related problems. Enjoy.
For instance the problematic question about at what point the human soul 'attached' or 'was created in' to a certain evolving primate, and why exactly that happened. Or why would any soul rise from the matter of (early) animals at all? In the end, everything that evolved is just still purely material. How could that matter moving around 'create' a soul? Why would that soul even want to go places? Why would there be places for a soul to go?
Do note that some people kind of use 'mind' and 'soul' and 'conciousness' interchangeably, this is however not the case here. 'Soul' is here as in the immortal entity that in a way is the essence of the person, and that can, without losing any of its features can leave a body, and go places. Like most Christians see it.
There is of course a mind, but that is something that in the end is caused by nothing but matter, in a direct relation, so that without the brain working, there is no mind at all.
Also, problem with the whole soul-thing are the clear empirical evidence how the material brain is truly what makes us up as persons. One of the oldest and well-know examples of this is Phineas Gage. After getting a piece of his brain blown away by an iron rod launched by an explosion, Phineas suddenly had a drastic change in personality. He became quite the asshole, for instance. If personality isn't in the soul, but in the mind, what then is 'left over' for the soul to be? The same goes for memory. Lose a part of your brain, and you might not remember certain things. A 'soul' in 'heaven' would be a drooling vegetable, since all our mental capacities can be traced back to our physical brain (with some exceptions/things we don't yet know).
Also, lets look at the case of a boy losing half his brain and surviving. The poor kid actually lost exactly one half of his brain, pretty much along that dividing line between left and right brain-half. In theory, this means, with some diabolical surgery, you could take half a persons brain, and implant it into a body of which you removed the brain, and end up with two living individuals, both functioning with one brain-half. I said 'in theory' But really, now what? Are there suddenly two souls? Do they share a soul? Would one drag another down to 'hell' with him?
Another 'thought experiment' (something that is valid to think about, but almost impossible to actually do) is the idea that in theory, there is no problem replacing one single neuron of a human brain with some sort of mechanical or electrical 'switch'. We know pretty much how neurons work, and we certainly could produce something that would give the exact same output with the same input as an actual neuron would. In theory, this then means that the entire human brain could be replaced, -one by one would take quite some time-, by these mechanical or electrical switching devices. Is the soul then transferred to the 'machine' consisting of all the neuron-replacing 'switches'?
Anyhow, I can go on, but the point is that from an evolutionary perspective, and a lot of other perspectives (I didn't really stick with evolutionary in this post, I guess), the soul is quite a problematic fantasy.
(About the personality changed hole-in-head-dude: http://en.wikipedia.org/wiki/Phineas_Gage)
(About the boy missing one brain-half and surviving http://www.unbelievablefacts.info/20...alf-brain.html)
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