First you document your idea. You should be comprehensive, but that doesn't mean you have to produce a doctoral thesis length plan. Rather you want to make sure you have touched all the different things that have to happen to succeed. Then, you evaluate your approach. The goal here isn't to figure out if your idea is good or bad, but rather to begin to figure out what are some of its weakest elements.
Scott D. AnthonyHistory teaches us that many breakthroughs were happy accidents. Whether that's penicillin coming from Fleming neglecting to clean his laboratory before going on vacation or the team at Odeon trying a little side project that allowed people to communicate in real time as long as their message was 140 characters or less (which ultimately of course became Twitter), the unintended is often the transformational.
Scott D. AnthonyIn the face of uncertainty, many companies will default to asking their innovators to study and analyze, which can't actually ever provide a definitive answer. The decision-making systems here are meant to deal with the reality that decisions about innovative ideas will rely on patterns and intuitions. The best venture capital organizations deal with this challenge by staging investment, actively participating in startups they fund, tying decisions to learning as opposed to artificial dates on the calendar, and assembling a diverse team of decision-makers.
Scott D. Anthony