May 9, 2008JEMH van Bronswijk, Eindhoven University of Technology 14 The 4 Ages 1 st Age YouthEducation 2 nd AgeAdulthoodWork for income (young male engineer: layered software generation) 3 rd AgeOlder AdulthoodActive in retirement 4 th AgeElderlyFrailty (elderly women of the hierarchical / electro-mechanical generation) Change technology users into co-designers
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