YOU SAID:

Nonsensical sense is impossibly believable.

INTO JAPANESE

無意味な感覚は信じられない。

BACK INTO ENGLISH

The senselessness is incredible.

INTO JAPANESE

その無意味さは信じられない。

BACK INTO ENGLISH

I can't believe it's pointless.

INTO JAPANESE

私はそれが無意味だとは信じられません。

BACK INTO ENGLISH

I can't believe it's pointless.