If a tree falls when you are not around, it still makes a sound and gradually decays, giving host to insects, plants and animals, until it is dirt.
I agree with you.
Yet this tree, the insects, plants and animals, and the process of being dirt, are all based on the calm source beyond any change.
By analogy, the ocean is the same ocean whether it appears as changing waves or calm unchanged state as the basis of these changing waves.
We as human beings simply have the natural ability to dive through the changing aspect of this ocean during TM practice and directly be aware of its calm unchanged state.
This calm unchanged state is used as the objective universal "tuning fork" that enables mental\physical phenomena to interact with each other in harmonious ways (where all mental\physical phenomena are subjective changes with respect to the objectivity of the calm unchanged state).
Take, for example, The Physical Sciences. They are clearly trying to reach the simplest base-ground of all Laws of Nature in order to actually be aware of how Nature's phenomena are deeply related to each other.
Currently it is done indirectly by using billions dollar equipments like Large Hadron Collider (LHC), but since we are evolutionary results of the same researched realm that have been developed as self referential phenomena during the evolution, each one of us enables to directly be aware of the simplest base-ground of all Laws of Nature (the calm unchanged state), by using technologies of consciousness like TM in order to directly achieve the benefits of acting right from the simplest base-ground of all Laws of Nature.