ɪt hˈæzbiːn ˈɑːɹɡjuːd baɪ dʒˈiːnfɹˈænswɑː mˈɜːʔn̩z ðæt kwˈeɪzaɪpˈɜːfɛkt ˌiːkwɪlˈɪbɹiəm ɪz suːpˈiəɹɪɚ tə ɹˈaɪnhɑːɹd sˈɛlʔn̩z nˈoʊʃən ʌv ɛkstˈɛnsɪvfˈɔːɹm tɹˈɛmblɪŋ hˈænd pˈɜːfɛkt ˌiːkwɪlˈɪbɹiəm æz ɐ kwˈeɪzaɪpˈɜːfɛkt ˌiːkwɪlˈɪbɹiəm ɪz ɡˌæɹəntˈiːd tə dᵻskɹˈaɪb ɐdmˈɪsᵻbəl bᵻhˈeɪvjɚ.
It has been argued by Jean-François Mertens that quasi-perfect equilibrium is superior to Reinhard Selten's notion of extensive-form trembling hand perfect equilibrium as a quasi-perfect equilibrium is guaranteed to describe admissible behavior.