I chat with my friend Jiawen Yu (嘉雯) or Jackie (previously on episodes 8 and 25), about 'making sense'. What does it mean when something ‘makes sense’ to us? Where did that algorithm in our minds come from? How can we know that the knowledge that arrives from running this program in our minds is the truth? What if the laws of nature morph over time, undetected? Does enlightenment quench the need for making sense?