- It was suggested by Geary.
- Biologically secondary knowledge is learnable and teachable.
- Biologically primary knowledge is learnable and not teachable. Because it is usually learned without being explicitly taught.
- We have evolved to assimilate biologically primary knowledge
Example: Learning to speak vs learning to write.
Secondary knowledge is culturally invented by humans.
Primary knowledge/skills:
- We have evolved to acquire
- Learned automatically
- Can’t be taught
Secondary knowledge/skills:
- It has only become relevant to us within last few thousand years
- Only needed because culture suggests they are important
- Deliberate efforts are needed