But whether you view multiple perspectives as true, or whether you view truth as not being singular, doesn't matter with regards to whether or not you actually choose to believe them. If you accept multiple truths, then you cannot simply choose to reject those things you hold to be true - even if you can justify them from differing perspectives. Operating from multiple points of view does not mean you choose what you accept as being true, it just establishes personal truth values regarding approaches to a particular issue.
Can you explain why someone can't choose to reject things they hold to be true? I mean, don't we see this regularly?
So you can imagine a place where gravity doesn't exist, therefore you can choose to believe that gravity doesn't exist?
Let's use a metaphor. If you visit a restaurant that uses chopsticks instead of Western utensils, can you believe that those utensils don't exist? Well, they sure don't in that restaurant, and with respect to the food you're putting in your mouth right now, that's all that matters, eh?