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.
(..) Yes. How long have you been in the palace, Daphne? Since l was three, my lord. Charming. l think we ought to get to know each other better, Daphne. Better, my lord? l can reward you well. My lord.... Daphne.... (..)1973 Westworld