For instance, I manage a team that does "full stack" development, where full stack means I regularly interact with mechanical and manufacturing, operations, electrical engineers, battery and radio people, embedded developers, mobile, and most aspects of backend engineering. We had an issue where one of our chip suppliers changed their FW, didn't tell us, and we literally were taking apart units to get to the bottom of why units off the line weren't working properly. We go pretty deep. Still, at some point we throw our hands in the air and say "Hardware is hard, it's in the name."