YOU SAID:

A character is incapable of doing something which would theoretically be possible in the real world for somebody in the same situation.

INTO JAPANESE

キャラクターは、同じ状況の誰かが現実の世界で理論的に可能であるようなことをすることができません。

BACK INTO ENGLISH

The character cannot do what someone in the same situation can theoretically do in the real world.

INTO JAPANESE

キャラクターは、同じ状況の誰かが現実の世界で理論的にできることを行うことはできません。

BACK INTO ENGLISH

The character cannot do what someone in the same situation can theoretically do in the real world.