The various categories that are listed on the sidebar and menu may be a bit obtuse. So, the following descriptions may be helpful.
Systems. It’s easy to get lost in lean tools and the related math. Lean practitioners remember that systems thinking is critical to maintaining the proper perspective and understanding. What kind of systems are we talking about? Well, stuff like Little’s Law, value stream analysis, process mapping, etc. These subjects, by their nature, reflect important inter-dependencies and with that…math.