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Original · left

Reasoning (human)

The action of thinking about something in a logical way.

First in use: ancient / pre-modern
Duplicate · right

Reasoning model

A language model trained to produce extended chains of thought before answering.

First in use: c. 2024

Reasoning / Reasoning (human) / Reasoning model

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Canonical todayMeasuring…
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Duplicate share · 12 mo—
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Colour keyGrey · original meaningGreen · duplicate meaningAmber · contested (40–60%)How colours work

Logic vs. o1 and thinking tokens.

Which meaning of Reasoning is the original, and which one is the duplicate riding on its name? Reasoning (human) came first (ancient / pre-modern). Reasoning model arrived in 2024. The data below shows which one owns the word now.

Wikipedia pageviews since 2015

Reasoning (human)Reasoning model
English Wikipedia pageviews since July 2015 load here.

Duplicate's share of attention

Green line = duplicate's % · above 60 it owns the word · below 40 the original does

Share-of-attention line loads here.

The case for each meaning

Sourced definitions, usage stats and quotes

Original · ancient / pre-modern

Reasoning (human)

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12-mo pageviews—
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Duplicate · c. 2024

Reasoning model

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More duplicated terms

AI & machine learning