Right, your position is defensible. I just think mine is too. I think that "indiscriminate" requires

    Unless otherwise provided, a person shall be criminally responsible and liable for punishment for a crime within the jurisdiction of the Court only if the material elements are committed with intent and knowledge.

    A mistake of fact shall be a ground for excluding criminal responsibility only if it negates the mental element required by the crime.

It's something worth arguing about, but I dont think it's open-and-shut.