2-3-4-5

The number ‘2’, Pythagoras understood, denoted a Dyad = line = 2 dimensions = diversity = the number of excess and defect. The first feminine number.

The number ‘3’ denoted Triad = plane = a restoration of harmony. The second masculine number.
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Those who would rule Us seek Two Classes of human beings. The first being Them, and the second being Us.

The Founders established Three Classes of human beings. The first being men actively participating in the economy (voters), the second being men passively participating in the economy, and women (free non-voters), and the third being slaves.
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A structure with two supports is unstable. Consider humans, who require millions of years of evolutionary development, as well as constant energy input, to stand upright. Consider also a bicycle rider who, without forward momentum, tips over.

A chair with three legs is solid. Each of the three legs makes full contact with the floor, regardless of imperfections of the carpenter. In contrast, the carpenter must be without flaw if each of the legs of a four-legged chair is to make full contact with the floor. Nobody would buy a chair that had only two legs.
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George Orwell teaches us through Emmanuel Goldstein:

Throughout recorded time, and probably since the end of the Neolithic Age, there have been three kinds of people in the world, the High, the Middle, and the Low. They have been subdivided in many ways, they have borne countless different names, and their relative numbers, as well as their attitude towards one another, have varied from age to age: but the essential structure of society has never altered. Even after enormous upheavals and seemingly irrevocable changes, the same pattern has always reasserted itself, just as a gyroscope will always return to equilibrium, however far it is pushed one way or the other.

The aims of these groups are entirely irreconcilable.

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In Orwell’s 1984, the Outer and Inner Party consisted of 15% of the population. The Number 3 times the Number 5 equals fifteen. A 3-4-5 triangle demonstrates the Pythagoran Theorem. Fifteen is also the rough percentage of Americans who were politically empowered at the Founding.