YOU SAID:

there is a difference between not knowing and being stupid

INTO JAPANESE

ない愚かさを知ることの違いがあります。

BACK INTO ENGLISH

You have to be stupid to not know the difference.

INTO JAPANESE

あなたは違いを知らない愚かなする必要があります。

BACK INTO ENGLISH

You must be stupid you don't know the difference.

INTO JAPANESE

あなたはあなたが違いを知らないことは愚かでなければなりません。

BACK INTO ENGLISH

You must be foolish that you do not know the difference.

INTO JAPANESE

違いを知らないとあなたは愚かでなければなりません。

BACK INTO ENGLISH

You must be foolish unless you know the difference.

INTO JAPANESE

違いを知らない限り、あなたは愚かでなければなりません。

BACK INTO ENGLISH

Unless you know the difference, you must be foolish.

INTO JAPANESE

違いを知らない限り、あなたは愚かでなければなりません。

BACK INTO ENGLISH

Unless you know the difference, you must be foolish.