In an interview, Johnson said he found "the undefined, in-between space [to be] where it gets interesting." Perhaps, then, Rumble is suggesting that while people may attempt to create identities based on objects – be it white soap or black soap – there will always be a degree of tension, of transience, that distorts that kind of identity. The gaps in Rumble's reflections serve to expose absences within an identity, just as the rest of the materials expose the viewer to the presence of one. The use of materials can certainly be a powerful aspect in defining identity, but Rumble reminds the viewer that they are not enough, nor can they last long enough, to complete a work.