James Dyson

British industrial designer who spent 5 years and built 5,127 prototypes to perfect a bagless vacuum cleaner — then built Dyson into a multi-billion dollar engineering company — whose story is the defining modern narrative of iterative product development.

Built the world's most valuable vacuum cleaner brand through 5,127 documented prototype iterations — making the number itself a marketing asset — and demonstrated that obsessive product perfectionism combined with premium pricing creates a more durable competitive position than cost competition.