Kant thinks it is possible to achieve nonperceptual cognition in three ways: (1) through practical action, (2) by analogy, and (3) through construction. The type of cognition available depends on the kind of object or concept being cognized. The fact that cognition of nonperceptual objects is possible in some cases opens the way for thought experiments to provide cognition in ways that go beyond providing fictional examples and exemplifications. In this chapter, I describe these other possibilities for cognition and show how they are at work in different kinds of thought experiments in philosophy.