Precision is an attribute of the deployed system. The same tech in an affluent suburb will have different precision deployed in an inner city. Ran into this exa

Precision is an attribute of the deployed system. The same tech in an affluent suburb will have different precision deployed in an inner city. Ran into this exact problem in biometrics, where NIST publishes tech error rates like FNMR and FMR, and system owners don't even know precision is a thing. They expect the vendor to tell them if it will work, when it depends how many true and false events you throw at the system.