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Humanity is on the cusp of practically limitless energy via nuclear fusion and basically nobody is talking about it, which is nuts. I left working in fusion because I was skeptical of the field's ability to progress, but my mind has totally changed (1/n)
Humans have built >100 tokamak fusion devices, which use magnets to confine and heat fusion fuel. We've hit a peak energy out/energy in (Q) of ~.67 Empirically, it turns out that Q scales *kind of* with the magnetic field cubed. 2x the magnetic field, 8x the efficiency. (2/n)
WELL, recent advances in mass manufacturing high temperature superconductors make WAY higher magnetic fields possible, and hence make Q >> 1 fusion possible! (3/n)