 Iyo ndiko nkora ubushakashatsi budashingiye ku bintu biboneka, mba nsa nkaho ndiko nditembereza mwishamba ryibintu bitagaragarira amaso, nshakashaka uburyo bwo kubivuga no kubishingira amahame, ku buryo nshobora gutunganya neza ivyiyumviro vyanje nkabishira ku murongo, gutyo ngashobora kubisobanura. Cheng akora mu gisata bita Theorie des categories ni amahame akoreshwa mu gusobanura ikoreshwa ryibiharuro mu biharuro nyene gikunze gukoreshwa mu kuroranisha ibisata bitandukanye vyibiharuro. 