Third, sharing our ideas with others introduces a major element of serendipity. When you present an idea to another person, their reaction is inherently unpredictable. They will often be completely uninterested in an aspect you think is utterly fascinating; they aren’t necessarily right or wrong, but you can use that feedback either way. The reverse can also happen. You might think something is obvious, while they find it mind-blowing. That is also useful feedback.

