1. A method for controlling an industrial process, the method comprising; outputting a plurality of parameters from a process for manufacture of a substance; using each of the plurality of parameters in a computer aided process, the computer aided process comparing at least two of the plurality of parameters against a training set of parameters, the training set of parameters being predetermined; determining if the at least two of the plurality of parameters are within a predetermined range of the training set of parameters; and outputting a result based upon the determining step.