The Myth of the Mean A warning on how looking at averages and their trends can be misleading and what one organization does to prevent falling into this trap. Found on the Evidence Based Management site which is a movement more people should be following.
http://www.shmula.com/373/explaining-variation Continuing on the theme of the danger of averages, Peter Abilla says: "Here is the truth of the matter: Your customers do not feel the average — they feel the variation."
breaking the ice Another take on the old adage of the trip of thousand leagues starts with a single step, but applied to TDD and legacy systems. I have found that TDDing a legacy system is a excellent way to learn how it was implemented. Of course the trick is to keep moving by not TDDing very deep in any one piece of code unless absolutely necessary. Another strategy is to too the TDDing in passes.
