[Southack]

"With the technology we have today, we can make a one nucleotide change in the DNA of just about any bacterium and look at the change. Is this not a good enough cause and effect for you?"

That sort of intelligent programming (well, really "guessing" due to our early stage in all of this) is precisely good enough for me, but I suspect that *your* side might prefer something a bit more unaided for these sorts of debates...

[furball4paws]

There is nothing you can do with molecular biological techniques that does not happen naturally. A mutagen doesn't make mutations that don't happen naturally, it just increases their frequency.