The lowest state of energy

Architect Tim Simpson shares an interesting insight about the Great Pyramid and architecture in general in his comment on Quora:

Among many, I find the Great Pyramid fascinating. Not because of any arcane ‘pyramidology’, but because the concept behind it – an eternal structure – was executed so well. All buildings, everything in fact, is trying to fall down; to achieve the lowest state of energy. The Great Pyramid has endured substantially in its original form because it was designed as a collapsed structure. It mimics a heap of stones; the shape of maximum ‘repose’ of a pile of rocks. It can’t fall down because it already has, in a sense. And that, with the inclusion of a few internal spaces, is all the building is. Its simplicity and purity is astounding.

If houses want to collapse to achieve their lowest state of energy, that is also true for mountains. And what about nature in general? Is this one of nature’s principles?