1. Article review A good way of checking your understanding is to give a short speech giving an overview of the article or explaining something interesting you learned from the article.

2. Designing the Perfect Auction What did the article say was the inverse of game theory? why? What is the concern about truthfully revealing preferences? Explain the auction types: Dutch, English, First price, second price “the underlying motivation for (ebay) adopting this auction was communication costs”. What are they referring to? What is general idea of Vickrey Clarke Groves?

3. Making decision based on the preferences of multiple agents What is a plurality rule? Kemeny rule – find an aggregate ranking with minimally disagrees with the input rankings Voting on individual issues separately can easily lead to undesirable results. Give an example. What is the solution?

4. Terms monotonicity assumptions externalities envy free pareto efficient substitutes/complements combinatorial auctions bidding languages manipulation