[Doctor Stochastic]

Thus, change in the characteristics of species or the types of species on Earth is a fact-- we can observe this.

Unless you are a clone, you are different from your parents.

[js1138]

If you are a clone you differ from your "parent". No such thing yet as perfect copies.

In a way this is proof of Darwin's mechanism of selection. Those who argue that genes degrade with generations of copy errors are, in effect, proving the necessity of selection.