I'm currently reviewing some literature and the most common answer is to ensure 5S in in place first before attempting to eliminate wastes (i.e. having a Kaizen walk program). Some sources though says eliminate the wastes first. My questions is if you are going to introduce Lean to an organization, which program would you do first? Are there situations where one is more important than the other, or is it that the other should ALWAYS come first before attempting the other one? What are your thoughts on this?