Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Kupfuura: Wegener ndiye akatanga kushandisa mashoko okuti "kufamba kwemakondinendi" (1912, 1915) (muchiGerman "die Verschiebung der Kontinente" <unk> akashandurirwa muchiChirungu muna 1922) uye akabudisa zviri pamutemo pfungwa yokuti makondinendi akanga "atama" neimwe nzira. Kunyange zvazvo akapa uchapupu hwakawanda hwokuti makondinendi aifamba, haana kukwanisa kupa tsanangudzo inonyatsogutsa yezvinhu zvaiitika zvaigona kunge zvakakonzera mafambiro aya. Zvaakataura zvokuti makondinendi akanga aparadzaniswa necentrifugal pseudoforce (Polflucht) yokutenderera kwePasi kana kuti nechinhu chiduku chokutenderera kwomuchadenga chakarambwa, sezvo kuverenga kwakaratidza kuti simba racho rakanga risina kukwana. Pfungwa yaPolflucht yakadzidzwawo naPaul Sophus Epstein muna 1920 uye yakawanikwa isingaiti.  Mubvunzo: Ndiani aifunga kuti fungidziro yaPolfluct yakanga isina kururama?
Paul Sophus Epstein