 Robinson (1994) sets forth the most extensive case for sense data in recent times. His book offers a history of sense-data theory, which he sees as deriving from Locke, Berkeley, and Hume. Robinson thus disagrees with the history offered above as regards Berkeley and Locke. He also specifies a standard conception of sense data (1994: 1–2): that such data possess the sensible qualiteis they appear to have, and that they are not intrinscally representational (they do not intrinsically refer beyond themselves; they have no intentional content). He takes the Argument from Illusion to be the primary classical argument for sense data in the twentieth century (though not much invoked before). Most of the other arguments he examines are related to Variation or Illusion, or to Jackson’s argument from science about color.