Joel Spolsky wrote about this exact subject (with graphs, etc. as requested). very worthwhile read: http://www.joelonsoftware.com/articles/CamelsandRubberDuckie

Joel Spolsky wrote about this exact subject (with graphs, etc. as requested). very worthwhile read: http://www.joelonsoftware.com/articles/CamelsandRubberDuckies.html http://www.joelonsoftware.com/articles/CamelsandRubberDuckie...