tacticprocessesandsemanticprocesses.paniedbyanumberofsubsidiaryhypotheses.First,thepurelysyntacticlevelofdeepstructurepositedbyChomsky(1965)cannotexist.Second,theinitialrepresentationsofderivationsarelogicalrepresentationsidenticalfromlanguagetolanguage.Third,allaspectsofmeaningarerepresentableinphrase-markerforms.Inotherwords,thederivationofasentenceisadirecttransformationalmappingfromsemanticstosurfacestructure.WhileGenerativeSemanticsisnolongerregardedasaviablegrammaticalmodel,itisimportantinanumberofways.First,itwasgenerativesemanticiststhatstartedanintensiveinvestigationofsyntacticphenomenawhichdefiedformalisationbymeansoftransformationalrules.Second,manyproposalsoriginallydisputedbygenerativesemanticistshavesinceappearedintheinterpretivistliterature.Finally,ingmoreandmoreappreciated.