Oh, we're on the same page -- I don't think they're engaging in fraud currently, just overlooking the implications of their process, as you note. But explicitl

Oh, we're on the same page -- I don't think they're engaging in fraud currently, just overlooking the implications of their process, as you note. But explicitly holding out a test set, throwing it away because your results on that set were no good, trying again, and then representing that held-out set as, indeed, held-out in later work -- as the parent suggested? I'm not sure what other word to use there.