I stumbled on this video on Youtube. It's a tradeshow conversation between Chris Nolte at Propel Bikes (mostly electric bikes) and Jude Monica from Magura.

It covers a lot of really interesting things about disc brakes that I was not aware of, and includes some insightful technical info. It's kinda long (35min), but worth a listen if you are interested in how disc brakes work, and how to optimize them.