Njengoba kunombhalo oyisithenjwa othi Ikusasa Lethu Elivamile, yayiyini injongo yalo mbiko?
Context:Ikusasa Lethu Elivamile, elaziwa nangokuthi Umbiko kaBrundtland, lanyatheliswa ngo-October 1987 yiZizwe Ezihlangene nge-Oxford University Press. Lokhu kushicilelwa kwakuwukuqashelwa kwendima kaGro Harlem Brundtland, owayenguNdunankulu waseNorway, njengoSihlalo weKhomishini Yomhlaba Yezokuvikela Imvelo Nokuthuthuka (i-WCED).  Imigomo yayo kwakuwukubambisana kwamazwe amaningi nokuncika kwamanye amazwe ekufuneni indlela yentuthuko eqhubekayo. Lo mbiko wazama ukubuyisa umoya weNgqungquthela yaseStockholm eyayingenise ukukhathazeka kwemvelo emkhakheni wezombusazwe othuthukisiwe. Ikusasa Lethu Elivamile lafaka izindaba zemvelo ngokuqinile ku-ajenda yezombusazwe; lahlose ukuxoxa ngemvelo nentuthuko njengendaba eyodwa.  Lo mbhalo wawuwumphumela womsebenzi wamazwe omhlaba "wezinsuku ezingu-900" owawuhlanganisa, uhlaziye futhi uhlanganise izethulo ezibhaliwe nobufakazi bochwepheshe "babameleli abaphezulu bakahulumeni, ososayensi nochwepheshe, izikhungo zokucwaninga, izimboni, abameleli bezinhlangano ezingekho ngaphansi kukahulumeni, nomphakathi jikelele" owawubanjelwe imihlangano yomphakathi emhlabeni wonke.  Lo mbiko wachaza "ukuthuthuka okuqhubekayo" ngokuthi "Ukuthuthuka okuhlangabezana nezidingo zesikhathi samanje ngaphandle kokuyekethisa ikhono lezizukulwane ezizayo lokuhlangabezana nezidingo zazo".
Inhloso yombiko othi Ikusasa Lethu Elivamile kwakuwukugxila ezindabeni zemvelo ku-ajenda yezombusazwe futhi kuxoxwe ngentuthuko esimeme.