All Models Are Wrong; Some Models Are

A Manager Of People Knows That In This Stable State It Is Distracting To Tell The Worker About A Mistake.

Many People In Management Are Being Paid To Produce Waste.

If You Can't Describe What You Are Doing As A Process, You Don't Know What You're Doing.

One Cannot Be Successful On Visible Figures Alone ... The Most Important Figures That One Needs For Management Are Unknown Or Unknowable, But Successful Management Must Nevertheless Take Account Of Them.

The Greatest Losses Are Unknown And Unknowable.