Why Harvard is not a good place to stay developing something?
An interview of Mario Capecchi, Nobel Laureate 2007 from Medscape

How long did you stay at Harvard before going to the University of Utah, and why did you choose to move there?
From 1961 to 1967, I was in Jim Watson's lab. After that I got a job at Harvard Medical School in the department of biochemistry. So that was until 1973, and then I decided to go to Utah. The reason for going was mixed. I felt that the department was not bringing in enough young people. It had very good people, but it was sort of on the decline because there were not any new people coming in. Another factor was that I thought I wanted to work on more long-term projects. At Harvard, it was difficult to do that because there was enormous pressure to produce very quickly and have new results every day. The kind of work that I wanted to go into might take quite a few years to do and then develop. So that was not a good environment to do those sorts of things. The third factor was that in the particular department that I was in, even though they were very good scientists, they actually did not get along very well. They spent a lot of time insulting each other. That was not a healthy environment. I mean, the only reason that people are in science is because they enjoy it, and it is important to have a pleasant environment. I decided to make a big jump. I had a friend that persuaded me to visit him in Utah. I accepted a position there because they had a good feeling of how to choose people that would enjoy being with each other scientifically as well as socially.