this just sounds like an engineer realising for the first time that the world has more complexity to it than anyone is capable of learning in their lifetime.

You always have to take _some_ things on trust, its just about choosing where you place that trust. Personally, I trust food vendors, I just close my eyes and point at the menu, instead of thinking about what I want to eat. I trust hardware and managed software environments (e.g. GC), my code sits above that in a reliable space. Its very rare that lets me down, I rememember one time where a USB issue correlated with temperature and the issue was some soldering, the hardware guys eventually caught it after I ruled out our software layer.

We all have to choose what we specialise in and learn about. It's sad we cannot go back in time and teach humanity how to do it all from scratch all by ourselves. Instead we're forced to have foggy areas in our understanding and we have to rely on each other to form a knowledgeable whole.