This field is the place on which all action takes place. All interactions take place here. Geometry provides the spacetime in which events are possible and probability is what causes all events in spacetime. Spacetime controls probability and probability controls spacetime. There is the duality of existence.
Geometry provides the multidimensional space in which events can occur.
It provides a location for the overall probability field to exist and controls the shape in which probability can exist. The geometry of the universe is infinite yet enclosed within a warping of space and time itself into a four dimensional shell. We also see through current theory that these are not actually particles of any absolute substance but rather a reflection of the probability fields of the universe. These fields tend to exist. MPFs tend to create observable phenomena which are tangible and appear to be solid on a macroscopic level.