> Why would it be wrong to post questions in different forum?
It's not wrong as such, so long as the OP is open and up front about all the places they've posted.
But they seldom ever are.
If you've ever answered a question, only to find the same question with the same answer somewhere else, you realise just how much a waste of time your own effort was.
A corollary of the shotgun approach is urgency.
The hope that if it's posted in enough places, an answer will emerge sooner than if posted on one forum.
The big problem with this is that it becomes an arms race - the only way to get an answer is to spam like mad, because all the helpers know questions have been spammed like mad. All forums become unusable and everybody who could help leaves.
So yeah, I post the cross references the OP failed to mention, so that the regulars can see whether they'd be wasting their time with some carefully thought out response, if what they wanted to say has already been said somewhere else.
> I am optimizing for 3 objectives.
Well if a good value for 1 objective is 0.014, and 0.3 to 0.9 for 2 objectives, then the answer for 3 objectives is 42.