Theories of apparently altruistic behavior were  by the need to produce ideas compatible with evolutionary origins.
θˈiəɹiz ʌv ɐpˈæɹəntli ˌɔːltɹuːˈɪstɪk bᵻhˈeɪvjɚ wɜː baɪ ðə nˈiːd tə pɹədˈuːs aɪdˈiəz kəmpˈæɾᵻbəl wɪð ˌɛvəlˈuːʃənˌɛɹi ˈɔːɹɪdʒˌɪnz.