What percentage of his success was do to technical innovation/invention vs. business/product innovation? I'd agree that his brother is critical, but I'm not su

What percentage of his success was do to technical innovation/invention vs. business/product innovation? I'd agree that his brother is critical, but I'm not sure that's the secret sauce here. http://venturehacks.com/articles/vertical-markets http://venturehacks.com/articles/vertical-markets Read that (especially the technical risk versus market risk section). I think these guys beat market risks and had relatively few technical risks.