theproductlifecycletheorycanberegardedasanextensionofthebasicHeckscher-Ohlintheoryintoatechnologicallydynamicworld,ratherthanasanalternativetradetheory.Inshort,theproductlifecycletheorytriestoexplaindynamiccomparativeadvantagefornewproductsandnewproductionprocesses,asopposedtothebasicHeckscher-Ohlintheory,whichexplainsstaticcomparativeadvantage.