Dean Buckner and Kevin Dowd, 1 March 2019
Professor Tunaru opens his NNEG report with an oft-cited quote from George Box: “All models are wrong but some are useful.” The Box aphorism is an apt one, but Professor Box went on to state
Since all models are wrong the scientist must be alert to what is importantly wrong. It is inappropriate to be concerned about mice when there are tigers abroad. (Box, 1976, p. 792)
For us the most interesting of the terms of reference in the ABI-IFoA aka astrology project on NNEG valuation was (to quote the project’s request for tender) to “consider whether there are any “halfway house” solutions between real world and risk-neutral approaches … .”