What exactly is ID?

Yes it does because most bad mutations are fatal. Neutral and positive oones don't count for obvious reasons. And the organism dies before it can reproduce, removing it from the gene pool. thus the mutation is not conserved.

When I said bad I meant fatal before breeding but I appreciate the way I phrased it did not make clear.I have always thought of non fatal mutations as neutral but I see that this view is not particularly useful in this case.You're probably right with your point on robustness (or at least it seems likely to me).

While I'm sympathetic to the view that some changes in the genes are not 'recognised' by NS I can't help but wonder about ancient lineages such as crocodiles: they are immune to this 'genetic entropy?

Argument from incredulity. So what you are basically saying is "I can't imagine this being natural; therefor design".Would you also care to respond to the topic I created so you could support your idea of genesis being 'aligned' with science?Or do you concede that you were and are wrong?