They are places within a business, an economy, an income human anatomy, a town, an ecosystem) where a tiny shift in one single thing can create big alterations in every thing.
This perhaps notion is not unique to systems analysis — it is embedded in legend. The silver bullet, the trimtab, the wonder remedy, the secret passage, the secret password, the solitary hero whom turns the tide of history. The almost effortless solution to cut through or leap over huge hurdles. We not merely desire to think that there are leverage points, you want to understand where these are typically and exactly how to have our arms on it. Leverage points are points of energy.
The systems analysis community features a complete large amount of lore about leverage points. Those of us who had been trained by the great Jay Forrester at MIT have all consumed one of is own favorite tales.