"ruthless, scientific focus, on the null (/failure) cases" means you're not going to build anything of value ever. There is risk in every startup, innovation, n

"ruthless, scientific focus, on the null (/failure) cases" means you're not going to build anything of value ever. There is risk in every startup, innovation, new technology, etc and a big part of making those work is laser focusing on success and leaving the failure cases to someone else (once you have a successful product and/or business).