This article begins by scrutinizing divergent critical views of Gordimer's subject position and authorial agency, which locate her variously on a spectrum ranging from liberalhumanist autonomy to historical-materialist determinism. It then considers how Gordimer's nonfiction articulates a parallel ambivalence about the reach of the writer's imagination (and its dependence on "the potential of his own experience"), particularly regarding the ethics and feasibility of creating racially "other" characters. Its main part reads July's People (1981), in relation to other Gordimer novels, as a similarly self-reflexive engagement with subjectivity and alterity: the otherness of the imagined future (a "potential experience") facilitates fresh sociopolitical perspectives, even as the novel expresses philosophical scepticism about such imaginative extrapolation and its textual representation. The article concludes with a new reading of the novel's "open" ending as a projection of this epistemological conflict.