Rooke's jealousy is secret, and this secret is one of the things that compromises his friendship with Silk. With this, the novel suggests that secrets can be the enemy of both storytelling and truth, as here, keeping the jealousy secret keeps Rooke from sharing something vulnerable and true with Silk—an act that would bolster their friendship. Once again, the way that Rooke and Silk speak about the natives like they're prisoners is indicative of their racist colonialist mindset.