1. Describe the tradeoff between using a ranking approach and using a scoring approach to select the best alternative using the preferences of the members of a group.
2. Consider again the rankings of the four gifts shown in Table 4.1. Suppose that the first voter changes his ranking to [pen, candy, mug, drive] (i.e., the ranks for the candy and the mug are switched). How does that affect the Borda count? Use the Kemeny–Young method to calculate the similarities of the possible rankings. Which ranking(s) would have the largest similarity value?