At the start of Thor: the Dark World, Jane Foster discovers the Aether by being sucked through a space-time passage that has opened up, due to the approaching Convergence, leading to the place where it was hidden.
What bothers me about this is what an incredible coincidence this is, even by the standard of Hollywood plots. A passage just happens to open up to one of the most powerful and dangerous artefacts in the universe, near the girlfriend of the heir to the throne which locked it up?
To say nothing of the fact of how ill guarded the Aether apparently is. There are no guards, and not even any meaningful containment. It appears to be floating about more or less freely between the halves of the monolith that's supposed to be keeping it. All it takes is for Jane to approach it closely for it to be able to escape and infect her.
Yet none of this is addressed in the movie, I don't think. It is not explained to have been engineered somehow by Malekith or one of his allies. Or is it? Am I missing something? Was it really an astronomical coindidence? Why was Jane sucked through the passage, when the other ones appear to be entirely neutral and inert passages? And why could the Aether escape so easily?