title: Comment on "constructing quantum games from nonfactorizable joint probabilities".
abstract: In the paper [Phys. Rev. E 76, 061122 (2007)], the authors presented a way of playing 2 × 2 games so that players were able to exploit nonfactorizable joint probabilities respecting the nonsignaling principle (i.e., relativistic causality). We are going to prove, however, that the scheme does not generalize the games studied in the commented paper. Moreover, it allows the players to obtain nonclassical results even if the factorizable joint probabilities are used.
authors.affiliation: Institute of Mathematics, Pomeranian University, 76-200 Słupsk, Poland.
authors.forename: Piotr
authors.initials: P
authors.lastname: Frąckiewicz