The Importance of Vanity Metrics in Growth

A lot of the thirst for growth is often driven by outward perception or ego, right? This idea of having other people see our success or having what you call vanity metrics to make us feel like we're doing good in the eyes of others. What exactly are vanity metrics? I think vanity metrics are quantitative data that doesn't matter,. That seems like it should, that seems like, well, this is good.