Principles and/or Practices?

There are two basic and obvious approaches to looking for a new approach to software development: “Learn-by-doing” and “Understand before doing”.  Combining would be a third approach, and one that I leverage.

Thanks to @mpoppendieck, regarding #Principles and Practices of #Lean Software development, who offers, “We observe that the best results come from combining the two approaches. Copying practices without understanding the underlying principles has a long history of mediocre results. But when the underlying principles are understood, it is useful to copy practices that work for similar organizations and modify them to fit your environment. This can provide a jump-start to implementing the principles. This combination of understanding principles and adapting practices led to dramatic success.” – Mary Poppendiek