ɐnˈʌðɚɹ ɪmpˌɑːsəbˈɪlᵻɾi ɹɪzˈʌlt wˌɛɹ ˈoʊnli wˈʌn pˈɑːɹɾi hɐz pɹˈaɪvət ˌɪnfɚmˈeɪʃən ɐbˌaʊt ɪts vˌæljuːˈeɪʃən kæn biː ʃˈoʊn tə hˈoʊld wɛn ðɪ aʊtsˈaɪd ˈɑːpʃən pˈeɪɔfs ɑːɹ nˌɑːt ɛɡzˈɑːdʒənəsli ɡˈɪvən.
Another impossibility result where only one party has private information about its valuation can be shown to hold when the outside option payoffs are not exogenously given.