"Because you didn't say NO, so you should say YES", Is it really right?

These days, I think about conflict between YES or NO.
If I didn't say NO, I should say YES, is this right?
I wish many people disagree this question.

"Not NO means YES?"

I don't think so. The world is not so simple, especially human emotions.
I feel that many american people are suffering about this question.

Over the half of american(?) voted  to President Trump,
but is it really means "Yes Trump, No Hillary"?

There are some patterns of american voters.
1) Yes Trump, No Hillary
2) Yes Trump & Yes Hillary
3) Yes Trump only
4) No Hillary
5) No Trump, Yes Hillary
6) Yes Hillary only
7) No Trump nor Hillary

So, 1),2),3) are Started by "Yes Trump", but there are 3 ways.

"Not NO" means "Not NO" only, "Not NO" doesn't mean "YES".

In addition, it seems that 3) people and 5) & 6) people can't understand each other... This is just my opinion...