Thisbookisaboutasolutiontothesemoreintuitiveproblems.Thissolutionistoallowcomputerstolearnfromexperienceandunderstandtheworldintermsofahierarchyofconcepts,witheachconceptdefinedintermsofitsrelationtosimplerconcepts.Bygatheringknowledgefromexperience,thisapproachavoidstheneedforh