UNKNOWN
Because your answer doesn't make sense, that's why I don't want to understand it.  You, if you had been in any doubt in State vs Barnard, you wouldn't have said to the Court, in circumstances where you believed as you now say that you do, that's it's highly unlikely that Peaches himself could have come up with this idea of swopping the pills, you wouldn't have told the Court in State vs Barnard, in those circumstances, that it was Peaches' idea.