fleem said:
I am convinced the best definition of "good" is "that which increases the order of the universe". Thus evil is "that which decreases it". So God cannot change that definition, because to do so would change the definition of God, where the definition of God is "infinite order".
The debate can be generalised to the question: is morality arbitrary or natural? Is it a free choice or determined by what is natural in the universe. So instead of worrying about the character of a god, we can ask about the character of the universe.
Arguably the most fundamental law of nature is the second law of thermodynamics. This is often taken to say that what is most natural, and thus what would be most good if morality follows from the deep character of the world, is an increase in disorder. Evil would thus be any increase in order.
Of course, complex systems (like life and weather patterns and other dissipative structures) are also good in this sense as they increase disorder generally even while they increase order locally.
The Catholic doctrine of double effect would thus excuse this "sin"
Anyway, it is an interesting ethical line to explore because it can lead you to argue that the heat death of the universe is a wonderful goal. And us humans, by finding a way to release the negentropy of the world's oil reserves in just a century, are doing our bit to hasten the arrival of this final nirvana.
But then global warming may disrupt the dissipative ability of the Earth for a while. The rain forests for example are quite effective degraders of solar energy. So it could be a case of win some, lose some.
But theoretically, the goodness of the human race could be quantified. It would be the amount of additional entropy we overall contributed to bringing the universe's heat death that tick closer.