> Just think how unfathomably complex human brains are compared to what's out there in space. There are plenty of complex phenomena in space, but I don’t need

> Just think how unfathomably complex human brains are compared to what's out there in space. There are plenty of complex phenomena in space, but I don’t need to go that far. Some other animal brains act like ours, at least as far as we can observe. There is nothing anywhere that grows exponentially forever.