NOTES:

- Multiple observers might not agree on the interval of space and time and even order of events, but they always agree on causality ie Event A causin Event B. In other words they agree on the space-time interval of events
- Time is not responsible for causality (A causing B), but Causality is all there is, what’s REAL
- Reality is not a 3D space that evolves in time. It’s a 4D Non-Eucledian Mathematical space that;s JUST THERE
- This 4D Non-Eucledian Mathematical space is called space-time
- Points in space-time are called EVENTS
- It’s the causal relation between events that;s real. ie A causing B can be seen as a line from A to B in our 4D Non-Eucledian Mathematical space