Q1. What are the contributions in this paper?
The authors study pairwise trading mechanisms in the presence of private information and limited commitment, whereby either trader can walk away from a proposed trade when he learns the trading price. The authors show that when one trader 's information is relevant for the other trader 's value of the asset, optimal trading arrangements may necessarily conceal the traders ' information.
Q2. What are the future works in this paper?
Studying such extensions is an interesting avenue for future research.