It 'ought not' ('to') make any difference. [=(more commonly) it shouldn't make any difference]
Children 'ought not' [='should not'] run near the pool.
If my math is correct, the result 'ought to' be zero.
(..) we couldn't wait to get away. But now we've been gone a while, we can't wait to get home. I just think about my dad out there on his boat all alone. I ought to be out there with him. My wife just had our first baby. - Boy or girl? - Oh, who knows? You think soldiers get ravens with news from home? (..)2017 TvShow: Game of Thrones Title: Dragonstone Season: 7 Episode 1