I like to collaborate and I do it often. I collaborate when I design and deliver PBL workshops for the Buck Institute for Education, in my independent consulting work, and I certainly do it in my work with the Collaborative for Teaching and Learning. That being said, sometimes I'm a loner. Quite often I prefer to work from home instead of going into the office or at least wear headphones when I am in. The office is a busy place with people who talk to me and ask me questions and while I do enjoy chatting it's not always the most productive setting. As an educator I strongly believe in the power of collaboration but as Jason Fried points out in the video below, too much collaboration can be counterproductive.