I think you can just take that to mean that the response (around some reasonable window) for the real drug was indistinguishable form the non-drug response window, with the assumption that a previous use of the real drug was too far away to account for the non-drug response.<p>Yes, that&#x27;s an assumption you should further clamp down later because of such extraordinary results, but it&#x27;s not unreasonable to make it, especially since it would be really strange for the earlier real drug to cause all its effectiveness spikes <i>right</i> when the non-drug is taken, and in the same amount as later uses of the real drug.