This is a central tenet of the Lean Startup by Eric Ries and the Startup Owners Manual by Steve Blank et al. Lean Startup is the faster read but if I recall co

This is a central tenet of the Lean Startup by Eric Ries and the Startup Owners Manual by Steve Blank et al. Lean Startup is the faster read but if I recall correctly Steve Blank was Ries' mentor/inspiration.