The Earth is able to collect knowledge and give feedback to itself. The ways plants, animals, bacteria react to food availability, pollution, aridity, changing climate are examples of such changes in the Earth's awareness. These changes modify their genes, which also store this new information.
Humans extend the Earth's nervous system.
We collect data and organize it and with the help of computers, store it in memory of books, pictures, disks, and transfer it to all parts of the world through telephones, television, copy machines, etc. The Earth's nervous system becomes blocked and does not function well.