I'm looking forward to listening to this one. My favourite so far as been the one on Clock Synchronization (https://signalsandthreads.com/clock-synchronization/)
> Clock synchronization, keeping all of the clocks on your network set to the “correct” time, sounds straightforward: our smartphones sure don’t seem to have trouble with it. Next, keep them all accurate to within 100 microseconds, and prove that you did -- now things start to get tricky. In this episode, Ron talks with Chris Perl, a systems engineer at Jane Street about the fundamental difficulty of solving this problem at scale and how we solved it.
It was so enthralling that I ordered a GPS receiver for my Raspberry Pi to bring high accuracy time to my flat!