I was just re-watching The Schizoid Man and I noticed a lot of themes in the episode that are re-explored in Measure of a Man. First off, "Data Graves" initially refuses to relinquish control over Data's body, saying that he is nothing more than a machine, with Picard arguing for his sentience, something that he would go on to do again during a legal proceeding on behalf of Data in Measure of a Man Also, at the end of The Schizoid Man, "Data Graves" ultimately decides to transfer his body of knowledge into the Enterprise computer, however, as Picard notes, while the information is there in the computer, Graves' consciousness or the "substance" of his personality has been lost and is no longer present in any form. Data raises the fear of this kind of loss in his objection to Commander Maddox over the experiments that Maddox wanted to run on him- that the information and experiences within him may survive the process but that the "substance", or the "flavor", of his experiences would be irretrievably lost if Maddox didn't have the proper skills to preserve him.