Intersting subject,
I heard about this magnetic field some years ago. It was proved that the polarity changes sometimes. But the effect of this were unknow. The question is, is it really proved that the field shuts down? Or is it just the author's suggestion?
Let's admit it's true, it is not the author's suggestion.
For me, it will not prove that Darwin's theory is false (in realty the theory is a bit false, but the concept is correct). for me Darwin says, when you reproduce(animals, plants) or duplicate(cells, bacteries, viruses), there is always some "mistakes" in the genes mix/duplication. Each generation will have (at least) a slighty different genome. Sometimes it can affect something, sometimes not.
Everybody is a mutant.
If your mutation allows you to be more efficient in the context where you live, you will have more chance to reproduce. (There is also another factor, because some genes are stronger than the others, this add more luck in the process).
For me, if there is really a "field shut down", it will simply makes a "jump" in the evolution. But this jump, don't prove that Darwin is false.
Note 1: A theory can never be completely truth, it's just a aproximation of the realty. Thus I can say, of course Einsein's one is false, but it's precise enough to predict a lot of things.
Note 2: A prove that Darwin is right (at least not completely false), is that some people have no wisdom tooth (I don't know if it's the right term in english, these are the toots that come around 18 years). It was not the case before. Before we were needing theses tooth to eat, if you don't have them you will just die before having time to reproduce. Now you can easily live without, no wisdom tooth people can reproduce, and because the modified genes are strong, we see this case more and more. Maybe people without theses tooth are more efficient and in many years nobody will have them anymore.
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