When Old Habits and Old Science No Longer Make Sense - Evidence vs. Habit in Medicine and #Lean

http://www.leanblog.org/audio274 I find it really interesting when scientific facts and truth get superseded by new evidence. Science isn't supposed to be stubborn… it's OK to cast aside the old status quo when we learn something new (pay attention, “flat Earth” crowd). There are a lot of these themes, also, in a book I've been reading, The Case Against Sugar, by Gary Taubes. Some of the established science about low-fat diets being good for us might not really be true. How does this all apply in medicine and our practice of Lean?