  The soul’s unity that we encountered in 3.2 functioned as the metaphysical principle of the inhibition of opposed representations in 3.3.1–2. Now, again, unity is the principle by which the unification of certain representations might be explained (cf. SW V: 307). We must keep in mind that our sensations (Sinnesempfindungen) form various continua, “sense dimensions” (Boudewijnse, et al. 1999: 179), or “modalities” (Boring 1950: 258), e.g., of color or taste and smell (PsW: 171; SW V: 307, f.). Within one and the same continuum, individual representations are opposed to each other, while representations from generically different continua are not (SW V: 307).[31] Thus representations lying on one continuum will mutually dim each other to a certain degree (SW V: 308). So, whereas a number of colors, like “white, red, black, blue”, will inhibit and dim each other, none of them can oppose and inhibit a taste representation (the example is at Weiss 1928: 80; cf. SW V: 312, f). Therefore, as representations may belong to the same or different continua, there must be, respectively, two different genera of representational unification (SW V: 308).