Information processing is limited to the capacity of the network. So it is easy to see that very small brains cannot be very smart (there is no set of connectio

Information processing is limited to the capacity of the network. So it is easy to see that very small brains cannot be very smart (there is no set of connections that can make fruit fly human-intelligent). However, having a large capacity network doesn’t mean it will result in high intelligence. So it’s necessary but not sufficient.