In many early-stage companies, concept testing is the way they get early sales or capital. This is how Dropbox got its first round of investment.1 When starting out, Dropbox had the hunch that the biggest issue it could solve for users was seamless synchronization of their documents across computers and the internet. The issue was definitely rampant, but the company had a difficult time pitching the solution to investors. When it explained how Dropbox worked, the investors dismissed it, citing a crowded market of similar tools. No matter how hard they tried to explain the solution, the
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