I'm having issues with the prospector profession. I would like to disable professions, which are able to prospect in games without prospecting. However I can't figure out where in XML it is set which units/professions, which can prospect. Without a well defined criteria to search for, I can't figure out which profession(s) to disable. What do I do to figure out the prospector is a prospector? (other than look at the name, that is ) CvGame is discarded each time you start a new game. Since the input for the calculation is pure XML, we can calculate it once and use it over and over. However CvGame could skip yields if nobody can use it. However given the relatively low amount of prospectable yields, I would say such optimization would be overkill. We would not be able to tell the difference.