It's rather a wrong use of the words they feature.
Presented questions like "During the time you and [partner’s initials] have/had a sexual relationship, have/did you ever have any other sexual partners?” are not about that, and are indeed heavily limited to monogamy perspective.
You can be in a polygamous relationship, but, unless you previously agreed to have free sexual contacts outside your group, doing so with someone else without everyone's notice and agreement is still absolutely cheating.
Having sex with several partners in a predetermined arrangement is obviously not cheating.
Hmm, true. Thanks for the note
Come and go, as I understand
What effect is that, if you know?
I wonder what causes this. Looks like more "vivid" picture (dk how else to express) of the two is left in one frame and right in the other and then left again etc.
Can it then be combined with peripheral vision to create those?