Hardware failure cost is not just the price of a part. It includes lead time, assembly, testing, rework, communication drift, missed demos, and lost trust.
The most expensive failure is often a question failure: the prototype was built before the team defined which requirement, load case, interface, or customer decision it should test. Smaller coupons and partial prototypes can answer risky questions faster than a full build.
RHXY Plan, Sim, and Render separate the evidence: requirements and assumptions, physical risk, and review-ready communication.