Every thrush is a bird. Every hummingbird is a bird. Every raven is a bird. Every ibis is a bird. Further on, the rules become increasingly precise.
X evokes positive sympathy.
In other words, if a person sees a bird that is suffering, that person will usually feel sorry for the bird. Some have a weirdly insightful quality. Specialized versions of Cyc are already on the market. Cycorp's clients, among them Glaxo Wellcome and Kanisa, use Cyc to perform tasks that are repetitive and boring but require common sense, like translating the chatter between two databases. But the Cyclists still have enormous obstacles to overcome.