The Upside of Irrationality is a book that followed which 2008 book?
The Upside of Irrationality:  This is Ariely's second published book, after he authored "Predictably Irrational": The Hidden Forces That Shape Our Decisions". Predictably Irrational: Predictably Irrational: The Hidden Forces That Shape Our Decisions is a 2008 book by Dan Ariely, in which he challenges readers' assumptions about making decisions based on rational thought.
i don't know