in gen 2 both are spoken of as being formed of the ground, so there is nothing surprising in animals being useful in medicine.

Aside from the fact that this statement is a classic non sequitur, I thought you didn't believe in "abiogenesis"? Make yer bloody mind up!

a mutation does not "by definition" produce new info, but in virtually every case deletes it

Yes, well you see, pete, different "info" is new "info" if it has not occurred before. Christ knows what else it could be. And, dearie me, a mutation will occur in isolated individuals, not the whole population. Nothing is thereby "deleted" from the gene pool, which is the whole point. The new "info" sits in there alongside the existing "info" and the gene pool is enriched. Natural selection may delete "info" from the gene pool (including useless mutations), but mutations won't. Now as I suspect that you wouldn't be able to follow the plot of Chapter One of The "Adventures Of Spot The Dog", all this will be lost on you, and you'll be back any time soon with more "info" nonsense. It's a good job I'm so patient with you.