While we're off for the holidays, please enjoy this rerun of Episode 34.

In "The Tipping Point," author Malcolm Gladwell looks at how ideas can spread like viruses. Citing psychological studies and using many examples, Gladwell shows how people, environments, and changes in an idea itself can lead to explosive growth in popularity. In this episode, Jarred Watts considers how the ideas in this book, which turned 20 years old in February, apply to investing. Watts is a client portfolio manager at Morningstar Investment Management.