There might be an octopus on Proxima Centauri b that is incredibly good at being an octopus, but if it can't build a radio, we can't talk to it. In this context

There might be an octopus on Proxima Centauri b that is incredibly good at being an octopus, but if it can't build a radio, we can't talk to it. In this context, intelligence is defined in practical terms and we're interested in civilizations that can communicate with us over distance.