YOU SAID:

Jackson is not not smart and is indeed a very smart and helpful person.

INTO JAPANESE

ジャクソンは賢くないわけではなく、確かにとても賢くて親切な人です。

BACK INTO ENGLISH

It's not that Jackson isn't smart, he's certainly a very smart and kind person.

INTO JAPANESE

ジャクソンが賢くないわけではなく、確かにとても賢くて優しい人です。

BACK INTO ENGLISH

It's not that Jackson isn't smart, he's certainly a very smart and kind person.