Specific, actionable, and transferrable to every kind of complex work. Note that complex is not the same as complicated. For latter one, we can create a manual, including all possible options and branches of decision making. LEGO kits, IKEA furniture assembly, production line, construction – and so on. If you cannot predict all the options, it’s complex – like driving, flying, combat, programming, weight loss… Universal examples of practices and principles would be: “prioritize”, “visualize work”, “limit work in progress”, “shorten lead times”.