sˈɪns wiː ɑːɹ ˈɪntɹɛstᵻd ɪn mˈɛkənˌɪzəmz wˌɪtʃ ɑːɹ tɹˈuːθfəl ɪn ˌiːkwɪlˈɪbɹiəm, wiː ɐsˈuːm ðæt ˈiːtʃ ˈeɪdʒənt ɐsˈuːmz ðætðɪ ˈʌðɚɹ ˈeɪdʒənt ɪz tɹˈuːθfəl.
Since we are interested in mechanisms which are truthful in equilibrium, we assume that each agent assumes that the other agent is truthful.