Sometimes the Simplest Components Teach the Biggest Lessons

One component I've completely underestimated is the humble 0Ω resistor.It looks insignificant, but I've learned it can simplify debugging, isolate circuits, and provide flexibility during development.It's one of those things you don't appreciate until you see experienced engineers using it everywhere.Little by little, I'm realizing that hardware design is full of these "simple but powerful" ideas.What component do you think beginners tend to overlook?

#PCB#