Picture a person at the very start of human history: a cave mouth, a fire, animal skins, a sharpened stone in one hand. In that picture there is no table, no law, no discussion — you take what you need with your hands, and the world has not changed for a very long time. English keeps the whole picture in one word, and then it can point that picture at anyone it likes.
可以想成一幅畫面：山洞口的火堆、身上的獸皮、手裡一塊磨尖的石頭。那幅畫面裡沒有餐桌、沒有規矩、也沒有商量的餘地——要什麼就伸手拿，而且幾萬年都沒變過。caveman 把整幅畫面壓進一個字裡。之後英文只要把這幅畫面指向誰，誰就被說成那個樣子。
From the word’s history
Wiktionary analyses the word as cave + man, formed on the supposition that early humans lived in caves. The modern word still carries that supposed scene rather than a scientific description.
Wiktionary 把這個字拆成 cave + man，並說它建立在「早期人類住在洞穴裡」這個推想上。所以它從一開始帶的就是一幅推想出來的畫面，而不是科學描述——這也解釋了為什麼它今天還是這麼「畫面感」。
Wiktionary, "caveman"
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