Sunk Costs and Social Innovation

I've been thinking a lot lately about the concept of "sunk costs." In economics and business decision-making, sunk costs are unrecoverable past expenditures that, under normal circumstances, should not be taken into account when determining whether to continue or abandon a project, effort, or initiative because costs that are already "sunk" cannot be recovered.

Inevitably, thinking about sunk costs reminds me of my "Saab stories." I purchased a used Saab for $15,000 a number of years ago and then spent more than $5,000 on...