Why? The omnipotent entity has negated both the lift failure and the creation failure, thus remaining omnipotent.
Originally posted by Bardock42
He has lifted it though, which means that it could be lifted by him, which is against the question's terms.
I'm not sure what you're saying, since for me, negating the lift failure = he can lift the rock (we're saying the same thing, I think), preserving his omnipotence against creating a rock he can't lift.
What if we worded the problem this way:
If condition A exists, then condition B can't exist.
If condition B exists, then condition A can't exist.
Can an omnipotent entity simultaneously have both A and B? Superposition would suggest, Yes: two otherwise mutually exclusive conditions can exist at the same time.
However, if we simplify even further (with the way you've worded the problem, which may be the best expression): Can a being which can do anything do something impossible?
If we say yes, we compromise "impossible."
If we say no, we compromise "omnipotent."
Either way, here clearly we are compromising the question's terms...which again brings us back to the follow-up question: What does this mean for "logic" and "omnipotence"? Certainly the compelling conclusion (though not necessarily proving) is that omnipotence can not exist unconditionally.
Sorry if I was rambling a bit, but I'm finding this whole thought experiment good mental exercise.