The Genius of Art Markman

Okay, maybe or maybe not :) But, this is a gem :

Archimedes … did you know what and then ran in the streets screaming Eureka!..

As this example reflects, solving a difficult problem feels good. In general, there is solid evidence that thinking quickly and successfully creates a positive mood. You probably feel good after having a great conversation with friends. One reason fast music tends to lift your mood is that you have to think quickly to follow along with it.