Even if the money doesn’t prove to be necessary, a major financing round can also have positive signaling effects — it helps convince the rest of the… - Reid Hoffman

Twitter came close to melting down in the same way, but managed to recover in time to build a massive business. When Twitter began its rise in the late 2000s, it became infamous for its “Fail Whale,” a whimsical error message that appeared whenever its servers couldn’t handle the load. Unfortunately for Twitter, the Fail Whale made fairly regular appearances, especially when big news hit, such as the death of the recording artist Michael Jackson in 2009 (to be fair, Twitter was hardly the only website that had these issues when the King of Pop passed away) or the 2010 World Cup. Twitter invested serious resources into rearchitecting both its systems and its engineering processes to be more efficient. Even with this strenuous effort, it took several years to “tame” the Fail Whale; it wasn’t until after Twitter made it through the 2012 US presidential election night without melting down that the company’s then–creative director Doug Bowman announced that the Great Blue Whale had been put to death.

Network effects generate a positive feedback loop that can allow the first product or service that taps into those effects to build an unassailable competitive advantage.

It’s tempting to assume she achieved this despite the “Nos.” But in truth, each of those 148 “Nos” was a clue that ultimately made her business even stronger. Some sharpened her view on who her user was — and who her user wasn’t. Some helped her grasp how her competition might think. And some gave her an early warning about the ways her company might fail. At the end of the fundraising process alone, Kathryn had a roadmap marked with every potential pitfall she’d need to navigate around — and the unexplored territory she could explore ahead of any competitors.