Sex differences that suggest men are designed for combat (Sell et al. 2012)pic.twitter.com/Dxj99XSjgV
![∃𝑋[∅∈𝑋∧∀𝑦(𝑦∈𝑋⇒𝑦∪{𝑦}∈𝑋)]](https://pbs.twimg.com/profile_images/976278603989168129/5nzgS7j4_normal.jpg)
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Hunting, especially in prehistoric times, can easily be thought of as a type of combat.
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