Comment by ants_everywhere

this construction is familiar to anyone who has taken a course on writing post middle or high school.

The formal version is "not only... but also" https://dictionary.cambridge.org/us/grammar/british-grammar/..., which I personally use regularly but I often write formally even in informal settings.

"not just... but" is just the less formal version.

Google ngrams shows the "not just ... but" construction has a sharp increase starting in 2000. https://books.google.com/ngrams/graph?content=not+just+*+but...

Same with "not only ... but also" https://books.google.com/ngrams/graph?content=not+only+*+but...

Like many scholarly linguistic construction, this is one many of us saw in latin class with non solum ... sed etium or non modo ... sed etium: https://issuu.com/uteplib/docs/latin_grammar/234. I didn't take ancient Greek, but I wouldn't be surprised if there's also a version there.

More info

- https://www.phrasemix.com/phrases/not-just-something-but-som...

- https://www.merriam-webster.com/dictionary/not%20just

- https://www.grammarly.com/blog/writing-techniques/parallelis...

- https://www.crockford.com/style.html

- https://englishan.com/correlative-conjunctions-definition-ru...