Spacetime

This paper demonstrates that space and time are not two separate dimensions that are connected, but two inseparable expressions of the same physical dimension. Every structure that occupies space necessarily lasts, and every structure that lasts necessarily occupies space. The center determines existence, while the stability of the relationship with the center determines duration. Time is defined as the fact of duration itself, not as a coordinate or measure.Space and time are mutually necessary implications The paper includes falsification criteria and responses to expected objections.