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Ancient Problemz's avatar

I can only speak to my own experience but most hotels have a perennial problem with night auditors who are basically selected for their ability to work overnight and do a little math. The hours being a more prominent constraint than the math skills.

However, the hours usually dictate that you will select for less scrupulous employees. You can probably take an honest man and make him less honest by working at night, but I have always wondered if overnight employees themselves are less honest on net, whether it’s biological.

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Rajeev Ram's avatar

Probably one of my favorite essays of yours. I asked a language model to estimate global (i.e., non-regional) distribution of these eight chronotypes.

+++++

Yes — while we don’t have exact population-level data for these specific three-gene combinations, we can make a reasonable estimated distribution across the 8 types by triangulating from known allele frequency trends and their regional overlaps. Here's a rough estimate using general global trends

Gene Frequency Trends Broadly Speaking

> PER3-L (Evening chronotype / 4-repeat): Most common in East Asians, moderately common in Europeans, less common in Africans

> COMT-H (Warrior): More frequent in non-European populations, esp. East Asians

> DRD4-H (Explorer/7-repeat): More frequent in Amerindian, African, and some European subpopulations; less frequent in East Asians

We’ll assume these gene expressions as being roughly 50/50 globally for simplicity, and adjust based on interaction patterns and known biases.

PER3 / COMT / DRD4 / Behavioral Summary / Est. Global %

L / L / L / Night-focused, deep thinker / 12%

L / L / H / Creative night owl, novelty-seeking / 14%

L / H / L / Resilient, quiet night shifter / 10%

L / H / H / Improvisational, high-arousal innovator / 9%

H / L / L / Structured morning person / 16%

H / L / H / Driven early riser, change-maker / 13%

H / H / L / Stress-hardy traditionalist / 14%

H / H / H / Bold daylight explorer /12%

Summary of Biases in This Estimation

> Weighted L-P (eveningness) slightly less common globally (~45%) due to selection pressures and societal drift toward early schedules.

> H-D (novelty-seeking) weighted toward ~50%, with some underrepresentation in East Asian-heavy populations.

> C (COMT) assumed roughly balanced globally, given offsetting selection pressures for Warriors and Worriers.

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