Lawrence Tech’s 2018 Harold Hotelling Memorial Lecture is up on YouTube:
Dad was on board with school choice, and it turns out that he and Dr. Harris discussed this when Dr. Harris was dad’s student. I enjoyed the nuance that Dr. Harris brought to the topic as well – something deeper than “markets are good” or “government is good.” Around the 22:00 mark he goes into the challenges in getting benefits of an free market in education:

As always, the stories at the start of the lecture are a highlight for my family and I, and I’m grateful to all the people at Lawrence Tech for organizing it each year.