Originally Posted by LovingRadiance
When we add a partner we now have twice as many issues to deal with.
I would say adding a partner more than doubles the issues. You still have your own issues as an individual, plus their issues as an individual, plus your mutual issues as a couple.
Theorem: the number of issues for n people in a poly arrangement is multiplied by 2^n - 1
So for 3 people, you have 3 people's individuals (3x) + the couple-wise issues (3x) + the issues as a 3-some (1x) = 7x
4 people, you have 15x the issues as a single person. And so on.
(4x individual + 6x pairs + 4x triples + 1x quad = 15x)
Hey, maybe there's a joint-math/psych thesis in here... lol yeah ok, I think it's bedtime, brain's getting silly...
Besides time, I would say another disadvantage to poly is having to put up with criticism from mainstream people, and having to keep the arrangement secret in some cases, depending on work / legal / social situations... and the difficulty in finding people to date who are either poly or at least open to the idea.