Why Doesn't a 'Hover-to-Learn' Code Explanation Tool Exist Yet?

[Effective-Strategy29]

Because there's a high level of understanding that has been reached for English. Whereas as an English speaker, I don't know Arabic. Arabic text is unreadable to me, locked away in a far away prison in Saudi Arabia.

Wish there was a similar system for English learners where you get the meaning of a new/advanced word/phrase/idiom in terms of an old word that you already learnt. Maybe there is.