Some points in section 4

Hi all,

As we talked on wednesday there are some points might be mentioned at discussion section or the assumptions. The first assumtion is that the online nature of the merket is assumed to be eBay-like. The stage games are assumed to be Bayesian games with assymetric information. I do not know if it is enough just to state that assymetric info means a player has more info than the other. One more thing is that perfect bayesian equilibrium thing we discussed on wednesday.
and at the stage game it is assumed that each seller acts as a honest merchant in a fraction of transactions. And at page 6's second paragraph, a term is used like Byeasian decision theory, but this is, I think , like perfact Bayesian Game should be included in a seperate section.

Lastly, there is a subtle point I did not understand. the a and B factors are taken into consideration only when the seller thinks that he is selling a lemon. But, even when the seller thinks that he is delivering the correct item, the buyer still can argue that it is not actually so. I mean when B (beta) is 1, the a (alpha) might still be say 0.5. but there is not such a state in the tree. since the author himself is saying that this a and B are subjective estimate, it is perfectly ok to expect this scenerio I think.

that is all from my section, I know most of them does not worth to be taken in discussion section, but I wanted to post them though.