Ndikukula kwachangu kwamakampani okongoletsera, nthawi ndi anthu apereka zofunikira zapamwamba, zabwinoko komanso zachangu pakukongoletsa.Zida zambiri zodzikongoletsera zatsopano, njira ndi masitayilo akutsatiranso ndikukula mwamphamvu.M'zaka zaposachedwa, zida zodzikongoletsera zotchuka kwambiri za 'rock slab' zidayamba kupezeka.Zinthu zamtundu uwu ziyenera kukhala njira yotsatira ikafika panyumba masauzande ambiri.Monga mbale ya thanthwe ndi zinthu zomwe zimapanikizidwa mu pepala ndi kuthamanga kwakukulu, chonde musadandaule za kuuma kwake, chifukwa zinthu zomwe zimapangidwa ndi kukakamiza kwakukulu zimakhala zolimba kwambiri, ndipo pansi pa pepalali palinso zofunikira kwambiri za sayansi, osanena kuti kukhuthala ndikwabwinoko, chonde khulupirirani malingaliro a wopanga pogula, chifukwa ndi anthu akatswiri kwambiri.