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It doesn't. It's designed to make things worse in the short and medium term, because thats how you fix things in the long term when they are otherwise beyond repair: destroy cancer with cancer. It substitutes anger and inevitability in place of despair, despair in place of hope. Thats the entire engine and fuel for the process.

Another way of putting it is to say, lead a nation or culture right up to the abyss, and then give it a bit of a nudge, and let gravity do the rest.

Collect the pieces at the bottom of the cliff, reassemble to how it should originally operate, or some sufficient facsimile.

Anywhere where destabilization projects succeeded. Culture jamming is one example.