We can only consider the possibility of biological neural structures as an emergent property based on what we currently know. Perhaps there are underlying forces or laws we are not aware of. Like for example, the discovery of quarks, the Higgs field and dark matter and dark energy. Neural structures may be an emergent property of unknown laws. Our current understanding of biology might not be the whole picture. The discovery of fundamental particles like quarks and the existence of dark matter/energy highlights how much we still have to learn about the universe’s underlying laws.
As yet unknown, physical or biological laws may govern the development of complex neural structures. These laws might lead to new, undiscovered emergent properties. For example, quantum mechanics plays a role at the atomic and subatomic levels. Perhaps yet-to-be-discovered quantum phenomena influence how neurons interact and organize themselves, leading to emergent properties like consciousness or emotions.
Fields like astrobiology and neuroscience are constantly pushing the boundaries of knowledge. New discoveries about the brain or the universe’s fundamental laws might illuminate how complex neural structures emerge. We should not rule out the possibility of underlying unknown laws leading to emergent properties.