Mutations disprove the theory of upward evolution

[Esquilax]

As to the mutations, they eventually accumulate in the code. What was non lethal can be become permanent in the genome and do to further errors turn more lethal when combined with the other errors.

You know what? You're right. It's the first time this has ever happened, but you, Grace, are correct.

And do you know what happens to the organisms that develop these cascading negative mutations that become fatal? They die off, leaving only those who don't have sufficiently harmful mutations to survive and propagate their species. There's a term for it: natural selection. You know, one of the driving forces of evolution?