ConceptConceptconceptConcept901001101201301401501990929496982000Phones,notbeerHouseholdspendinginOECDcountries*,1990-100CommunicationsRestaurantsHealthandhotelsEducationAlcohol,tobaccoWater,electricityandnarcoticsandgasHouseholdequipmentRecreationandClothingandfootwearcultureFoodTransportVariationTechnologicaldiscontinuity2.Competence-enhancingInnovations.Competence-destroyinginnovationsEraofferment2.Substitution.Designcompetition.Community-driventechnicalchangeSelectionDominantdesign2Eraofincrementalchange2.Elaboratedominantdesign.Architecturalinnovation.Market-basedinnovationVariationTechnologicaldisco