In a highly-reified society, one’s behavior and mentality are greatly influenced by commodity. In the meantime, an individual is interpellated as subject by ideology, and then becomes obedient to the mainstream discourse. An Outpost of Progress by Joseph Conrad presents how the three highly-reified subjects react differently to interpellation. Devoid of any awareness, Kayerts ends up as a victim to reification and interpellation; Carlier is killed by Kayerts in an incident on the verge of his realizing ideological deception. Makola, the negro, is able to refuse interpellation and drift outside of the colonism ideology. By analyzing the impact of reification and interpellation upon the three, this article reveals serious reification and hypocritical ideology of capitalism as well as the uncertainties in human being’s development.