Causality

1. What is distance between two?
2. What is change?
3. What causes change?
4. What is before and after?
5. Why cause is before and effect is after?
5.1 it is because we defines so.
5.2 what happens if we define other way round?
5.2.1 Time will flow backwards.
5.2.2 EM theory works both way round?
5.2.3 Quantum tunneling effect.