P sure I talked about this a bit before, but it came back to my mind and I had to actually write it out. A Better Temperature System xanthir.com/b58m0

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A Better Temperature System

xanthir.com
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Replying to @tabatkins
One thing I like about °C is that it's a good match for the minimum perceivable increment. I can tell the difference (maybe not reliably) between a room heated to 19°C versus 20°C. @tabatkins argues that increment should be bigger, but I think °C is about right.

Sep 22, 2020 · 3:41 PM UTC

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Replying to @davidbaron @tabatkins
That said, there's also disagreement on whether the minimum perceivable increment should be valued as 1, 5, or 10...
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I also think the description of temperate climates has a regional bias. Interior North America is quite unusual globally in its summer versus winter temperature variation; only interior north Asia (Siberia, central Asia, Mongolia, inland north China, etc.) is comparable.
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Replying to @davidbaron
I think you're probably right; I think 2°F is probably about the minimum increment I can reliably feel. My argument is that 10°F is the minimum *climate* increment to change your behavior/clothing choices, and that's nice and round.
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(Tho for the heximal variant I give up and return to a near-Celsius degree size instead, as that lets me still use a 0-100 range, and thus the "climate increment" is 3 degrees. Oh well.)