To explain, the nucleus consisting of protons (CEO etc) and neutrons (board, advisors, investors, interns), which are bound as one collective by mutually beneficial needs and interests, for example, startup advisories gain advantage from seeing innovative work whilst the startup protons gain industry credibility and expertise through affiliation. Then there are the electrons which represent the surrounding industry ecosystem (including competitors, market-forces, technological advancements and so on). These create energy(examples being media hype or trends) for the nucleus. The electrons are a force disconnected from the startup due to its infancy, however, it must be understood as necessary in creating inspiration, know-how and viability.
Conclusively, without each component (the nucleus and electrons) thriving a startup fails. For example, no matter your capabilities as a nucleus an example financial crash (effecting the electrons) ultimately undermines a startup's progression.