Following someone else's design, I am fine, I build exactly to the spec. But now they want me to develop a device from scratch that has to be both safe and actually work, and the weight of it lands on me. Every choice could hurt someone if I get it wrong, and I feel completely out of my depth.
More people experience this than they realize.
You can follow a design, but developing a safe, effective medical device overwhelms you.
If this sounds familiar, the Library can help you find the bigger picture.