Why is it best practice to keep prototypes as low- to mid-fidelity during the early stages of rapid prototyping?
When high-fidelity design is done, the time for feedback and testing is over.
Rapid prototyping involves quick feedback and iteration so high-fidelity would be a waste of time.
Testers are easily distracted by high-fidelity design and therefore feedback is minimal.
Rapid prototyping tools are made to create only low- to mid-fidelity designs.