[brunohaid]

For anyone who cares enough to watch a 2 hour video on it and hasn’t seen it yet, this Rick Hartley video is the recent gold standard of explaining the issues at play:

https://www.youtube.com/live/ySuUZEjARPY

The mindblowing thing to internalize is that you don’t route energy as electrons through copper traces (they move incredibly slow) but merely use the copper to guide a bunch of waves traveling outside of them, where they are up to all kinds of shenanigans like coupling, reflecting etc.