Everything is true. Knowing this, we can see that it is purely for anthropic reasons happenstance that we pay any attention to our selves, or the world that we chance to find around us. It is an infinitely tiny sliver of an infinite multiverse. We see ourselves as a subject undergoing successive experiences in time in a classical universe simply because our view is so restricted. They would see that their universe is purely subjective.
Nothing is objective.
It makes no sense to single out one person, one universe, one set of physical laws or constants. As the Buddha taught, individual things neither exist, nor do not exist. The three signs of being, the characteristics common to all life, are impermanence, suffering, and an absence of a soul. Buddha keeps away from these discriminations and looks upon the world as upon a passing cloud. To Buddha every definitive thing is an illusion.