Their predictions were poor, virtually worthless. Their expertise enabled them to give impressive reasoned arguments regarding their predictions, but the predictions were frequently wrong or off the mark. This leads one to conclude that perhaps some areas of study are too complex to predict. Nate Silver has written a very good book, “The Signal and the Noise,” on what types of data are amenable to modeling along with suggestions as to how to deal with these difficult types of data. Time will tell whether different areas of expertise can achieve reasonably accurate predictions, or whether there are fundamental biological and cognitive limitations.