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I think we're making an assumption that the ground is also "perfect." It would also be entirely possible that the poles would cross each other at one point, depending on the terrain.
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Knowing that death is certain and that the time of death is uncertain, what's the most important thing?
—Bhikkhuni Pema Chödrön
Humankind cannot bear very much reality.
—From "Burnt Norton," Four Quartets (1936), T. S. Eliot
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