Evolution

[simplexity]

Mathematics does not agree with you. There are no documented mutations that do any such thing (infinite variation). All we have been able to prove is that variation whether through natural selection (which extracts form existing mutation) or mutations is limited to producing variation of a certain kind of species resulting in different kinds of that species (never anything totally new even with the alleged time you claim).

Obviously there have been billions of new mutations which have popped up over the last few millions of years, otherwise we would not be here.

The only thing which is used to label a new species is when A(animals) are no longer able to reproduce within their previous ancestral species. This is completely possible because at some point there will be enough variation that some genes will no longer be compatible with the previous strain of genes and can no longer go through meiosis. In meiosis new material can be added to the genome and/or deleted, therefore your argument that the general genome will always stay the same is completely incorrect. What you call macro evolution has occurred. Really its all one thing evolution but this is beyond the point.

Therefore a new species has arrived. There has not been infinite variation, just enough to get to the next step.

With asexual species the difference between species is much more blurred, but like I said before they have different methods of increasing their genome and therefore changing from a one celled organism to a multi-celled organism and onward from there.

P.S. If anyone wants to add on with more ways a the size of genome can be increased or decreased be my guest. This is most of what causes what these people are calling macro evolution.