Stack

A stack composed of somewhat independent entities (like a stack of firewood) can be piled quite high, despite a foundational lean that makes it vulnerable to toppling. It is still vulnerable to toppling, but may do so incompletely. A leaning monolith however is given to more irresistible toppling the more mass is added atop the already existing lean, and fused, all topples together and completely, though it may take more force to separate it completely too. Barring ideological compression, nothing is simple.