A torus is the geometric shape of a donut. Many processes in nature take the form of a torus. Hurricanes, tornadoes, magnetic fields around planets, stars and galaxies are torus shaped. Research at MIT even showed the electromagnetic field of a human heart is shaped as a torus.
The metaphor here is that energy is constantly being recycled. When we create value through building companies our entrepreneurial energy is recycled when we invest that value back into other companies.
A torus is the geometric representation of "pay it forward".
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