Breadboarding maps logic, not layout. It keeps the review focused on whether the system makes sense before anyone responds to how it looks. Once you introduce layout, people respond to spacing, visual weight, type choices, attention moves away from structure. A breadboard shows how parts connect and what happens when a user takes an action, without triggering the visual response that derails the structural conversation.
The same logic is behind Stop spending time on wireframing and Fat-marker method: low fidelity isn’t a limitation, it’s protection against premature attachment to a specific solution. The canvas becomes the right tool once the work needs spatial judgment, when layout, type, and visual weight are the actual decision. Until then, opening a design file is often the wrong starting point.