Follow your curiosity. It's what led you here.
- Spacetime: A mathematical model that fuses the 3D world with the 1D time into a 4 dimensions. https://en.wikipedia.org/wiki/Spacetime
- Spacetime interval: Defines the flow of causality. https://en.wikipedia.org/wiki/Spacetime#Spacetime_interval
- Metaphysics: The branch of philosophy that examines the fundamental nature of reality including mind and matter, substance, attributes, potentiality and actuality. https://en.wikipedia.org/wiki/Metaphysics
- Epistemology: The theory of knowledge and explores "what it means to know" and "how do we know that we know". https://en.wikipedia.org/wiki/Epistemology
- Causality: The theory of temporal cause and effect relationship of events. https://en.wikipedia.org/wiki/Causality
- The Clockwork Universe: the Newtonian belief that the universe operates like a mechanical clock where every motion kicks off the next event from the dawn of the universe to the present. https://en.wikipedia.org/wiki/Clockwork_universe