We know for certain. The involvement of Irregular in the other cases was never a secret, they were quite open about what they were working on and the results of the evaluations were being published on their website.

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0xy 8 hours ago | parent [-]

Their disclosures in other cases is not evidence of non-involvement in this case.

	▲	ameliaquining an hour ago \| parent [-]
		Can you explain in what way you think they could possibly have been covertly involved?