Page "Neural Darwinism" Paragraph 5

With neuronal heterogeneity ( by Edelman called degeneracy ), it is possible to test the many circuits ( on the order of 30 billion neurons with an estimated one quadrillion connections between them in the human brain ) with a diverse set of inputs, to see which neuronal groups respond " appropriately " statistically.

Functional " distributed " ( widespread ) brain circuits thus emerge as a result.