By making comparisons across cultural traditions (time-based) and cultural regions (space-based), anthropologists have developed various kinds of comparative method, a central part of their science.
baɪ mˌeɪkɪŋ kəmpˈæɹɪsənz əkɹˌɑːs kˈʌltʃɚɹəl tɹɐdˈɪʃənz tˈaɪmbˈeɪst ænd kˈʌltʃɚɹəl ɹˈiːdʒənz spˈeɪsbˈeɪst, ˌænθɹəpˈɑːlədʒˌɪsts hæv dɪvˈɛləpt vˈɛɹiəs kˈaɪndz ʌv kəmpˈæɹətˌɪv mˈɛθəd, ɐ sˈɛntɹəl pˈɑːɹt ʌv ðɛɹ sˈaɪəns.