Is it just me or is the phrase "human beings" used more often than simply "humans"? I've just started to notice this: the next word after "human" is very often "beings". Whenever someone wants to emphasize our humanity (as opposed, say, to a horse's horseness), they almost always say "human _beings_" instead of "humans". Somehow "human beings" seems to emphasize the "human spirit/soul".
And recently even dropping the negation itself while keeping the meaning: “je sais pas”
I never thought about that. Interesting. This negation related cycle is apparently called Jespersen’s cycle and happens in many languages. The English equivalent