Kuva ku gutunganya ibikoresho vya mbere gushika ku gutuma ibintu vya nyuma birungikwa, iyo nzira irimwo: ibiti bicagurwa, bikagabanywamwo ibipande, bikayumwa bigahindurwa mu bikoresho vyihariye vyo kwumisha, bikabitoranya kugira ngo bimenyekane ibara ryavyo be n’ibinenge, mu ntango bikategurwa, bikatemwa, bikanywanywa, bikakoranirizwa hamwe, bikayumwa, bikagirwako umunyota, bikagitera umunyota, hanyuma bikagisukura. Guca ibiti mu bice vy’imiterere itandukanye hanyuma ugasubira kubikoranya mu mbaho zitandukanye mu buryo bunaka birashobora gutuma ibiti bimwebimwe bigira imiterere myiza, nk’uguhinduka kw’ibiti, ukudahinduka, n’ukuvyimba n’ugucika intege. Imbaho zigizwe n’ibice binini cane zifise inkomezi nyinshi z’ubuhinga, mu gihe imbaho zigizwe n’ibice bitobito zifise ubumwe bwinshi.
Wohereze Itohoza