But that recursive thought has a limit. For example: You can think about yourself thinking. With a little effort, you can probably also think about yourself thinking about yourself thinking. But you can't go much deeper.
With the advent of modern computing, we (as a species) have finally created a tool that can "think" recursively, to arbitrary levels of depth. If we ever do create a superintelligent AGI, I'd wager that its brilliance will be attributable to its ability to loop much deeper than humans can.