Pace Kant, we must think outside of our own thought; and we must positively conceive the existence of things outside our own conceptions of them. In Eugene Thacker’s terms, it is not enough to just consider the (objective) world-in-itself, in its difference from the (subjective) world-for-us. We must also actively explore what Thacker calls the world-without-us: the world insofar as it is subtracted from, and not amenable to, our own concerns. We learn about the world-for-us through introspection, and the world-in-itself through scientific experimentation. But we can only encounter the world-without-us obliquely, through the paradoxical movement of speculation.