You can see this very easily in the task of programming. Back when programs where written on punch cards and results were returned in days, hand compilation and

You can see this very easily in the task of programming. Back when programs where written on punch cards and results were returned in days, hand compilation and execution was a net win because you didn't want to compile\execute your program more than you had to. A business example would be mail order. Think mail order by horse->truck->plane then invention of the internet.