Click here to read the second paragraph of an article from the Journal of Economic Perspectives. Notice that:
- The Journal of Economic Perspectives is devoted to communication between insiders and outsiders!
- The word "identification" is used in almost every sentence.
- Nowhere in that paragraph, or the preceeding paragraph, is it made clear to an outsider which of my definitions (if any) of identification is used.
- Nowhere in that paragraph, or the preceeding paragraph, is it made clear to an outsider (or to most insiders!) what are the null or alternative hypotheses, or classes of hypotheses, which cannot be distinguished. Nor is there an explicit reference to a system of simultaneous equations.