TractionBy: Gabriel Weinberg, Justin Mares In Traction, serial entrepreneurs Gabriel Weinberg and Justin Mares give startups the tools for generating explosive customer growth 'Anyone trying to break through to new customers can use this smart, ambitious book' Eric Ries, author of The Lean Startup Most startups don't fail because they can't build a product. Most startups fail because they can't get traction. Building a successful company is hard. Smart