Earlier quoted context omitted.
Knowledge transfer over generations is a function of the brain. Other species have much more limited ability to transfer knowledge intergenerationally, and that is because the human brain's capability for symbolic language is much more advanced than other animals', who are not able to encode knowledge nearly as efficiently.
The point is it's a function of many connected brains, not just one brain.
[0]: https://www.nobelprize.org/prizes/physics/1965/feynman/lectu...