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.
(..) Hey, Nigel. Would you look at that? What? Sun's barely up and Gerald's had more than he can handle. Yeah. Reckon somebody ought to help the poor guy. Well, don't everybody fly off at once! All right, Gerald. What is it? Fish got your tongue? Love a duck! Love a duck! (..)2003 Finding Nemo