student asking question

What's "previous entirety of human history"? Does it refer to the period before human history started?

teacher

Native speaker’s answer

Rebecca

Not quite! It means before this specific point in time of human history. 'Cause only recently did "gluten" become a well-known or big thing for people to concern themselves about, as it wasn't considered a problem before. Ex: For the previous entirety of my work life, I never considered changing careers until now. = Until now, I never considered changing careers. Ex: For the previous entirety of human history, we weren't nearly as concerned with the environment as we are now.

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