If you are distracted by, or simply prefer a version without, the background music - you can find that here: https://youtu.be/xSbqTTs1nl0   My preferred version is here: https://youtu.be/2IneL4VpShE as there are some helpful (though not essential) visuals. This is about knowledge creation and the the commonalities between the two forms known (evolution (by natural selection) and explanatory) and the differences between them. It teases out and synthesises some of the work of Darwin, Popper and Deutsch on these matters of what creativity means. I also consider the place of prediction and prophecy and the "urge" to know what the future will hold. This is sometimes the dividing line between optimism and pessimism. You can support this ongoing exercise in optimism, exposition and encouraging rapid progress by following the links here: https://www.bretthall.org/ Thankyou for any and all support. Know it is much appreciated.