This really depends on culture. China/Chinese, for example, emphasises balance via symmetry. Hanzi are balances by layout into 4 grids (even practice books ha

This really depends on culture. China/Chinese, for example, emphasises balance via symmetry. Hanzi are balances by layout into 4 grids (even practice books have a 2x2 grid for a character) - yes I am aware some characters have 1, 3 or 5 particles however these also fit within this grid. Design of architecture is based around 2s and 4s, leading to relatively 'square' stuff (easy example, see the layout of the Forbidden City) and, sometimes, within this, the concept of non-uniformity. I think the rule-of-three is quite culturally specific.