• Why don’t all animals photosynthesise? (the Problem of Evil revisited)

    [This is a post I created last year, but I screwed up embedding the video. So viola un autre fois.]

    Here is a video I did some time ago which I think sums up the Problem of Evil in one fell swoop. The question sidesteps free will theodicies, especially as it applies to the rest of the animal world. See what you think.

    Excuse the shameless plug at the beginning, and the bastardised use of begging the question!

    The follow on question, asked in the book, is why it was deemed necessary to design a system whereby animals need energy at all. There is a much wider debate vis-a-vis energy in this here universe.


    The Problem of Evil is usually stated as something like this:

    1. If an all-powerful and perfectly good god exists, then evil does not.
    2. There is evil in the world.
    3. Therefore, an all-powerful and perfectly good god does not exist.

    Here is a better version:

    1. There exist instances of intense suffering which an omnipotent, omniscient being could have prevented without thereby losing some greater good or permitting some evil equally bad or worse.
    2. An omniscient, wholly good being would prevent the occurrence of any intense suffering it could, unless it could not do so without thereby losing some greater good or permitting some evil equally bad or worse.
    3. (Therefore) There does not exist an omnipotent, omniscient, wholly good being.

    It is better because it talks about evil as being gratuitous or not. The evil in the world can still logically exist, as long as it is not gratuitous (ie serves a purpose). With regards to the question about photosynthesis, the idea is that eating meat and causing animal pain and death must be necessary for some other, greater good.

    The Christian is in the position of being able to say, as they always do, that this is logically possible. This, however, is not good enough. It falls into the fallacy of what Richard Carrier calls possibiliter ergo probabiliter. In other words, something is possible, and so therefore it becomes probable. This is not, for me at any rate, an epistemologically good method. If I went through my life believing things because they were possible and not probable, I would get into some serious trouble.

    The Christian would no doubt claim that the rest of the evidence for God means that the evidence for it not being gratuitous is good and makes the conclusion that there is a greater good probable. This is not good enough for me. And if this is the case, then God could surely communicate that there is a greater good, not least what that greater good is. Many Christians argue that we cannot know the mind of God and we might not understand what the greater good might be. I think this is vastly underrating human understanding and is effectively laughable.

    In sum, the fact that a vast number of animals eat other animals in order to survive, meaning that there is an incredible amount  of pain and suffering on earth just so that animals can merely survive, raises some really difficult questions for the theist, and ones which are only ever answered with get-out-of-jail free cards employing the omniscience escape clause. And I just don’t think that’s good enough.


    I asked this question to William Lane Craig at the Stephen Law debate in London after the debate. He had no answer, though declared it was a great question. There you go.

    Category: Problem of Evil


    Article by: Jonathan MS Pearce