Sometimes you can tell a system is in a supercritical state.
A supercritical state is one where it appears stable, but is actually on the cusp of a catastrophic cascade.
A canonical example is the Emperor Has No Clothes.
Every adult is afraid to embarrass the emperor (or themselves).
But everyone can see with their own eyes the emperor is naked.
All it takes is one spark (a child's laughter) and the whole equilibrium shatters in an instant.
When you can tell a system is in this state, plant some nucleation sites.
These nucleation sites can be cheap, a diversity of acorns of ideas.
Nucleation sites are schelling points, little seeds that ideas can congregate around.
For example, in an organization maybe share a meme-able document that is subtly subversive and suggests a different approach.
Once the kayfabe shatters and people can acknowledge the value of the previously subversive idea, everyone can by default congregate around the idea you previously seeded.