It gets a bit technical, but this is a good example of how arbitrary economics can get with data. I always tell my students how no matter how sophisticated the scientific toolbox, it inevitably boils down to telling stories. This doesn’t mean that some stories are not better then others! This article, for example, tells a good story in the appropriate context.
http://evonomics.com/why-economist-ignore-much-of-rich-peoples-income/?utm_source=Mailchimp&utm_medium=Email&utm_term=unpaid&utm_campaign=Newsletter
Why Economists Ignore Much of Rich People’s Income – Evonomics
Posted: 2016/01/27 by Punkonomics (@dearbalak) in Links/Articles/Video0