I modified your assertions slightly for logical clarity. I do not believe I changed their meaning. Alterations underlined for visbility.
- SimGod can start the simulation, and let it run through till the end. (He’s omnipotent.)
- SimGod knows what’s good and what’s evil; alternatively, he defines it.
- SimGod can keep a running total of evil.
- When the simulation has concluded, it has a certain amount of evil associated with it.
- SimGod wants the total amount of evil to be as small as possible. (He’s omnibenevolent.)
- SimGod can run the simulation again, and again, until all possibilities have played out.
- Among all these possibilities, one, which will be known as world A, will have the least amount of evil.*
- This amount may not be 0.
- SimGod can choose the one with the least amount of evil (world A) as the ‘actual’ history of the world.
- The denizens of world A may find themselves in the presence of some evil.
- For any given act of evil, they can ask the question: ‘Without this act of evil, wouldn’t the world be a better one?’
- The answer to this question would always be no, as the resulting alternative world would always be either worse, or impossible.
- This is exactly the situation we find ourselves in.
First, minor notes:
2 is half-false; omnibenevolence disallows SimGod from defining good and evil.
6 is false; omnibenevolent SimGod cannot actually run any suboptimal scenarios. However, being omniscient he doesn’t actually have to do so; he can choose the optimimal world ex nihilo, making 9 true anyway.
Now, major notes:
11 and 12 don’t follow from 10. In 8 and 10, there may be evil in the optimal world A. Which means, explicitly, there might not be. 11 and 12, however, unqualifiedly assert that there is evil in the world A, which is not proven anywhere, making 11 and 12 unsupported by the statements that precede them. Thus the argument is logically fallacious.
Okay, let’s pretend for a moment that you actually said (changes bolded):
8b) This amount is not 0.
10b) The denizens of world Ab will find themselves in the presence of some evil.
First I’ll note that 8b is an assumption that I do not accept, and thus I would declare the resulting b argument unsound. But let’s pretend that I accept it for the sake of argument, allowing us to look at the other flaw in your logic, which is that you’re leaping from the general to the specific. A fact which can be pointed out by asking - what exactly does 13 mean? What does it show?
I say it shows literally nothing - except that we are not in the best possible world if 8b is false (which I actually think is the case, omnipotence being what it is).
Consider the worst possible world, Z.
10Zb) The denizens of world Z will find themselves in the presence of some evil.
11Z) For any given act of evil, they can ask the question: ‘Without this act of evil, wouldn’t the world be a better one?’
12Z) The answer to this question would always be no, as the resulting alternative world would always be either worse, or impossible.
13Z) This is exactly the situation we find ourselves in.
Note that 12Z is obviously false; Z is not the optimal world so things can indeed get better. But the people in Z don’t know that. And neither do the people in Ab. So, the people in Ab and Z are both in exactly the same situation we find ourselves in: we see some evil, period. That’s as much informatiuon as your argument gives the people in the worlds to work with, and it’s exactly what your argument shows: that we are in one of the worlds in the set A through Z (inclusive). Which we already knew axiomatically. The argument shows nothing.
Consider the equivalent argument:
1-10p) You have a set of pool balls, numbered 1 through 15.
11p) If you were looking at the largest-number pool ball you would see that it has a number less than 20.
12p) The answer to this question would be no, because 15 < 20.
13p) We have a randomly selected pool ball, and its number is less than 20.
(unstated conclusion 14)p: Because we know our pool ball is <20, it might be the 15-ball.
(unstated premise 15p): You’re also not allowed to do any other thinking on the matter, lest it show that the ball with the 6 printed on it is not the 15-ball.
In real life, it’s trivially easy to imagine alternate worlds that would be better. Here is but one example that took like ten seconds to think up: suppose everyone in the entire world behaved like Jesus. All christians would say that WWJD is an approach for making the world a better place. Some people don’t do WWJD, so the world is provably suboptimal, to all Christians. Thus we provably are not in world A, or even world Ab.
Another is, SimGod is omnipotent, foo! There’s way this world is the best he could do, by definition, unless it is exactly what he wants. By definition. Which would necessarily mean that if I blow up a maternity ward, he liked that outcome better than if I had a heart attack or was hit by a bus or changed my mind. Which means that he thinks dead babies is the best possible outcome - better than having the mothers never successfully conceive.
This is absurd, of course. Though it would be handy if I wanted to justify literally every heinous idea that it crossed my mind to do. Everything I do I by definition good!