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...Economics interactions with other discplines engineering thomas o boucher department of industrial systems rutgers university usa keywords capital budgeting technology selection productivity and technical change cost estimation benefit analysis public sector projects risk uncertainty sustainable contents introduction society principles project evaluation overview typical problem types considering in the estimates cash flows judgmental irreducible factors glossary bibliography biographical sketch summary is application economic to design alternatives key decision making tools for evaluating were originated by two th century professional engineers arthur wellington railroad industry jules dupuis civil their original works have been extended augmented over years economists are widely applied today justify financial efficacy apply science designing products processes through innovation research development an array new technologies become available time some these will be used not understa...