"We humans have this great evolutionary trait that allows us to quickly adapt and become accustomed to new environments and scenarios. For prehistoric man, I'm

"We humans have this great evolutionary trait that allows us to quickly adapt and become accustomed to new environments and scenarios. For prehistoric man, I'm sure this helped a lot." We crave change in some parts of our lives. It's like in marriage, do one "exciting" activity with your partner every week and your happiness goes way up. http://www.nytimes.com/2012/12/02/opinion/sunday/new-love-a-short-shelf-life.html http://www.nytimes.com/2012/12/02/opinion/sunday/new-love-a-...