YOU SAID:
It is impossible for Translation Party to find equilibrium for this sentence.
INTO JAPANESE
彼がそれをするのは不可能だ。
BACK INTO ENGLISH
It is impossible for him to do it.
INTO JAPANESE
彼がそれをするのは不可能だ。
BACK INTO ENGLISH
It is impossible for him to do it.
That didn't even make that much sense in English.