Sorry, I was a bit vague. I was thinking about how claiming it is part of the plan was a dodge around questioning why god would be surprised of this outcome, but that it throws any claims of benevolence under the bus. But also how god often had these tests for people (Abraham, Job, Moses), and that were he omniscient, this would be either stupid or evil to do. I suppose were I to be more precise with that quip, I should say that any character that is omniscient will run into contradiction if you posit them to have just about any additional abilities.