In order of proposed manifestation:
Unknown/unknowable
Random structural (natural law)
- Quantum Mechanics
- Physics
- Chemistry
Propagation through reproduction
- Hereditary (genetics, DNA)
Observational
- Instinctive
Cultural (inception of abstract thinking)
- Mental Models
- Beliefs
- Language
Inferred (recognition of abstract thinking)
- Religion
- Philosophy
Deduced
- Scientific Method