"So how would you recognize a natural ethical process if you saw one?"
Suppose that you observe process A- maybe you look at it, or poke around a bit inside it, but you don't make a precise model. If you extrapolate A forward in time, you will get a probability distribution over possible states (including the states of all the other stuff that A touches). If A consistently winds up in very small regions of this distribution, compared to what your model is, and there's no way to fix your model without making it extremely complex, you can say A is an "ethical process". Two galaxies, or two rocks, or two rivers, can easily collide; but if you look at humans, or zebras, or even fish, you will notice that they run into each other much less often than you would expect if you made a simple Newtonian model.
...on signing up for cryopreservation with the Cryonics Institute.
(No, it's not a joke.)
Anyone not signed up for cryonics has now lost the right to make fun of Paris Hilton,
because no matter what else she does wrong, and what else you do right,
all of it together can't outweigh the life consequences of that one little decision.
Congratulations, Paris. I look forward to meeting you someday.
Addendum: On Nov 28 '07, Paris Hilton denied being signed up for cryonics. Oh well.