How do you know that it's a matter of conscience rather than learning? You don't know a thing about these 'imprisoned spirits,' what they think, how they think, their circumstances, who they are or what they are....yet you confidently claim "the story suggests it's a matter of conscience rather than ability to learn."
To determine that we need to know something about these 'imprisoned spirits' - yet we are told nothing about them.
Meanwhile, you still dance around the question I raised: the terms for our so called salvation and their implications.