I can design most dies now and they run clean off the press. But the big multi-stage ones, where one wrong move upstream wrecks everything downstream, still tie me in knots. I map it out, second-guess it, and lie awake sure I've missed a step.
More people experience this than they realize.
You can design most dies, but the complex multi-stage ones still trip you up.
If this sounds familiar, the Library can help you find the bigger picture.