So I’m not sure if you are aware of it, but it turns out that all of the  people in the world can be divided into one of two different groups.  

These groups consist of people who like to get their morning coffee from  Dunkin and people who like to get their morning coffee from Starbucks. Traditionally once you’ve picked which group you want to belong to, you will never change your mind.  

The product managers at Dunkin have decided that they want to grow  their market and so they are preparing to change their product  development definition and do battle with the Starbucks product managers  in order to see if they can win some more customers over to their way  of doing coffee.