Let's Talk about .. Type of Economist

I have a chance to participate the exhibition at the Bank of Thailand's library. It's about Pra Siam (Bank of Thailand's magazine). There's talk show about the Writer by Dr.Kobsak Pootrakul http://www.kobsak.com He talked about his history, how to become the writer. He said that in our world, there are 3 types of economist:-
1. Real economist is the economist who write the important economist papers or theories that many economists know that it's very good. However, it's quite difficult to understand even the economists also take time to read and understand.
2. Up-and-down economist is the economist who reports the economical situation everyday by the using the current event which occurs to be the reasons.
3. Airport economist is the economist who write the story that make people be excited about the future things.
4. Pop economist is the economist that have ability to create something to make ordinary people understand economics. For example, Paul Krugman