Part of the Drake equation is multiplying by the probability that intelligent life evolves. Of course we only have one data point, but it seems like intelligenc

Part of the Drake equation is multiplying by the probability that intelligent life evolves. Of course we only have one data point, but it seems like intelligence is a pretty good response to many evolutionary pressures and so is likely to come about over time. Of course, this depends on how frequent you think intelligence is. I think most people assume it's very frequent.