Ingxelo yophando ichaza ukuba ngokuhamba kancinci kokukhula kwenani labemi kunye nokukhula koqoqosho, ukukhula kwemfuno yenkani yehlabathi jikelele yemfuno yezinto ezinokuphakama. Ukongeza, inguqu yokucoca amandla inokuba lucelomngeni. Ukwakhiwa kweziseko zophuhliso ezihlaziyiweyo kunye nokuveliswa kwezithuthi zombane kufuna iintlobo ezithile zezinyithi, kwaye imfuno yezinyithi inokuthi ihambele kumashumi eminyaka ezayo, iqhuba amaxabiso kunye nokuzisa iingenelo ezinkulu kumazwe athumela ngaphandle. Nangona amandla ahlaziyekayo sele enamandla aphantsi kumazwe amaninzi, ifosili lefosili liza kuhlala linomtsalane, ngakumbi kumazwe anovimba oninzi. Kwixesha elifutshane, ngenxa yotyalo mali olunganeleyo kubuchwepheshe bekharbhon ephantsi, ubudlelwane bemfuno yoncedo lweemveliso zamandla zisenokuba bukhulu kunokuba zinikezelwe, ke ixabiso liya kuqhubeka lihlala liphezulu.