Professor Aswath Damodaran, based at New York University's Stern School of Business, recently participated in a Google discussion session which focused on the value of using stories in business. The discussion centered on how businesses value their stocks by having a compelling story that justifies its financial assumptions.

Professor Damodaran explained how stocks can become runaway stories, which is basically a story that investors firmly believe in. This may lead to them avoiding asking important questions about the company.

He used Tesla Inc (TSLA) as an example of a runaway story, explaining how he had written an analysis of the company in September 2013, in which he estimated Tesla's stock value to be only $67.12 per share even though it was trading at over $168 per share at that time.