This article explains how to document test cases using 'caseshots'—files combining inputs and expected outputs in problem-specific notation—to make test failures more intelligible and enable reuse across testing, code review, and production inspection. It illustrates this approach through a portfolio levelling problem where new investment money must be allocated across funds to reach target allocations.
An essay examining why independent producers rarely license dormant studio catalog despite open access, drawing parallels to Alvin Roth's market design work in organ donation. The author argues that markets fail not from prohibition but from coordination problems—too few participants or insufficient time to evaluate offers—and that an open door does not constitute a functioning market mechanism.