The video I am responding to is here: https://www.youtube.com/watch?v=b_6vY... which is on the @Mercatus Center channel with Tyler Cowen. The original is well worth watching in its entirety. My response does not do it justice and is just intended as a supplement for those who have watched the whole thing and might have some questions at the end about various parts. I’m not pretending to speak for David - I’m just giving my own perspective given my understanding of what I’ve read in, for example, “The Beginning of Infinity”. Tyler Cowen does a fantastic job here of questioning David and articulating what are some of the frequently heard objections about this world view. It is, for example, common to hear something between a denigration to a downplaying of the importance of Popper especially among academic types. David provides an excellent explanation of Popper and I have a few things to say about that myself.