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Light Only Comes From Heat

The phrase "light only comes from heat" sounds so judicious. Who wouldn't want a pleasant, decorous argument where everyone respects everyone, no one's feelings are hurt, and plenty of light is generate, but no nasty heat.

Yet, if you think about it, where else does light come from but heat? Things that are very cold give off no light, yet everything that emits light will also be hot. If you don't like heat, you've no desire for light. If you want light, you musk risk heat.

Speaking from my own experience, it is the forceful, honest and clear arguments that have persuaded me, or have at the very least lodged the seed of doubt in my own mind, not those who argue by endlessly trying to flatter me, or search for middle ground, or who pretend to respect my argument more than they actually do.

All truth seekers should expunge this silly cliche from their vocabulary.

I end with the immortal words of John Milton:

I cannot praise a fugitive and cloistered virtue, unexercised and unbreathed, that never sallies out and sees her adversary, but slinks out of the race where that immortal garland is to be run for, not without dust and heat

-15
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Yet, if you think about it, where else does light come from but heat? Things that are very cold give off no light, yet everything that emits light will also be hot.

I would observe how over the past few decades we've moved from domestic lighting based off the blackbody radiation of incandescent (hot) filaments to high-efficiency LEDs producing (blue or UV) monochromatic light based on the engineered semiconductor band gap, illuminating carefully designed phosphors to re-radiate pleasant spectra with maximal efficiency. These are much more power efficient than incandescent bulbs, and are observably less hot, even if the light itself will (subtly) warm that which it shines on.

I don't think one can avoid some metaphorical heat (excessive emotional valence) with the light of sober discussion, but we can certainly strive to be more efficient about it.