e kore e puna raraunga Big tikanga te mutunga o te rangahau rangahau. I roto i te meka, he reira te ritenga. puna raraunga Big me rangahau he kīnaki kore whakakapi kia rite te nui o piki raraunga nui, tatari ahau e te uara o rangahau e piki me te pai.
He kairangahau i teie nei i roto i te tukanga o te hanga te toru o nga wā o te rangahau rangahau e ka tino pea e āhuatanga e 1) tūponotanga-kore tīpako, 2) uiuiraa rorohiko-administrated, a 3) hono raraunga rangahau ki ētahi atu raraunga. Ko Ia o ēnei wāhanga e toru tonu i roto i te whanaketanga hohe, engari rite nga huringa taiao raraunga me ngā kairangahau haumi wa ake ki wāhitau enei raruraru, tatari ahau whakapai ake nui. Just rite kairangahau ka mau painga o te tūringiringi whānui o waea founu i roto i te 1960 me te 1970 i roto i te tikanga ki te whakahou rangahau rangahau, tatari ahau e ka whakahou ano kairangahau rangahau rangahau i roto i te whakautu ki te huringa i hanga e te tau mamati.