In our exploration of the nature of mass, energy, and spacetime, one key question arises: why should mass have any effect on the spatial and temporal relations between massive bodies? This is not just a question of how mass behaves in space; it's a deeper inquiry into the fundamental nature of the universe itself. Why do we observe mass influencing the way space and time interact? To answer this, we need to consider the relational nature of space, time, and mass—not as independent entities, but as interdependent dimensions of potential that are actualised through observation.
Relational Models of Space and Time
In traditional physics, we often hear about spacetime as a kind of "fabric" that can bend and stretch in response to mass and energy. However, we can reinterpret this using a relational model of spacetime, where neither space nor time are independent entities but are understood as relational phenomena. Instead of thinking about a "curvature" of spacetime, consider that mass influences the relations between points in space and moments in time.
This relational view doesn’t conceptualise space as a static container but as an active participant in the unfolding of processes. When mass is present, it impacts how these spatial and temporal relations are instantiated. The presence of mass constrains the relations between points in space, stretching or compressing distances in ways that determine how processes unfold.
Mass, in this framework, doesn’t create a physical "dent" in space, as the rubber sheet analogy suggests. Instead, it modifies the relational network of spatial and temporal interactions. Mass doesn’t distort space itself, but rather the potential for spatial and temporal relationships.
Why Does Mass Affect Spacetime?
To get deeper into this, we must ask: why would the relational system be affected by the presence of mass in the first place? To answer this, we need to consider the concept of "potential" in relation to meaning. Just as we conceive of space and time as potential dimensions that only manifest through observation, we might consider mass as an instantiation of potential energy. In this sense, mass is not a "thing" occupying space, but rather an affordance within the relational system that influences the unfolding of processes.
When mass is introduced into this relational web, it "competes" for resources—specifically, the spatial and temporal relations that govern the unfolding of other processes. This creates a form of "gravitational tension" within the network, manifesting as a constraint on spatial relations, ultimately resulting in the observed phenomena of gravity. The interaction of mass with spacetime is not a direct "force" acting upon space; rather, it is the manifestation of a complex interaction between different dimensions of potential.
Energy and the Speed of Light
One of the most fascinating aspects of this model is the relationship between mass and energy, particularly when we consider the speed of light. In the traditional view, the speed of light is treated as a constant, but in a relational framework, the speed of light is the limit at which information or influence can propagate through the network of spatial and temporal relations.
If mass influences the relations between points in space and time, then energy is the capacity to alter or "disturb" these relations. The speed of light becomes the maximum rate at which these disturbances (or changes in the network) can occur, preserving the integrity of the relational system. In other words, no change can propagate faster than the speed of light, ensuring that the interconnected relations between spatial and temporal dimensions are respected.
Unfolding of Processes vs. Time Flow
In this model, the unfolding of processes is a more accurate description of what we commonly think of as the "flow of time." Time is not an independent dimension that flows, but rather, it is the dimension along which processes unfold. The relational network between space and time adjusts dynamically to accommodate mass and energy, and the pace at which processes unfold is influenced by these relational constraints. The speed of light serves as the upper limit on the rate of this unfolding, ensuring that no spatial-temporal relation can unfold faster than light allows.
Conclusion
By reframing mass, energy, and spacetime through the lens of relationality, we begin to see a more interconnected and dynamic understanding of the universe. Mass doesn’t simply "bend" spacetime; it influences the potential relations between points in space and moments in time. Space and time are not static; they are active participants in the unfolding of processes, with mass altering the constraints within this relational web. This view offers a more flexible, dynamic model of the universe, where the observed phenomena are the result of the interaction between potential dimensions and the instantiation of mass and energy.