When seeking early customer feedback, showing a single prototype can seem like a final decision. Dylan Field suggests presenting multiple different prototypes at once. This frames the conversation around exploration, de-risks the feedback, and prevents customers from thinking you're committed to any single path.

Rainbird hosts 'fly-in' events, bringing customer groups (like architects or contractors) to its headquarters. These events include an 'innovation lab' where product managers showcase early-stage concepts under NDA. This institutionalizes customer feedback, making it a predictable and recurring part of the development process.

While being a user of your own product provides deep empathy, it can create bias. The Winnebago PM, a young mother, recognized her needs differed from the typical older customer. She actively balanced her intuition with direct observation of the target demographic's actual usage patterns.

Beyond gathering user feedback, a key purpose of a physical prototype is destructive testing. Winnebago's PM intentionally pushed their prototype to its limits on harsh terrain, causing failures that revealed critical weaknesses that could then be engineered out before full production.

Early demos shouldn't be used to ask, "Did we build the right thing?" Instead, present them to customers to test your core assumptions and ask, "Did we understand your problem correctly?" This reframes feedback, focusing on the root cause before investing heavily in a specific solution.

Voice of the customer research is often insufficient. Adopt iterative innovation by quickly creating and demoing cheap prototypes—even computer simulations or animated concepts—to get constant, early feedback. This validates ideas in real-time.

De-risk new product initiatives by validating them directly with the market using low-fidelity prototypes like sketches. By building a following and an adoption list before development begins, you create undeniable proof of demand that can overcome internal resistance and ensure a successful launch.

Rather than using formal focus groups, Float validated its bold billboard concepts by involving a small group of existing, friendly customers in the creative process. This provided crucial feedback and built conviction without incurring significant extra cost or time.

In design thinking, early prototypes aren't for validating a near-finished product. They are rough, low-cost "artifacts" (like bedsheets for walls) designed to help stakeholders vividly pre-experience a new reality. This generates more accurate feedback and invites interaction before significant investment.