Each brain is exposed to different circumstances. It's very likely that your brain is unique in the history of the universe.
Gerald EdelmanHebb place the Law of Effect at the synaptic level by proposing a correlation model of synaptic modification similar to that of Hayek (1952). This work was seminal in providing a basis for many subsequent theoretical studies . .
Gerald EdelmanEvolution works by selection, not by instruction. There is no final cause, no teleology, no purpose guiding the overall process
Gerald Edelman