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Random thought on metaphor: in engineering, your "argument" is always grounded in a structure "beneath" your construction: the UI is grounded in code, which is grounded in the OS, which is grounded in the processor's logic, which is grounded in circuitry and ultimately physics.
I like this! Lightning is like insight. Tendrils searche down from the heavens and once connected to the ground the full force flashes downwards.
