Itumanaho ni igikoresho cy’ingenzi abantu bakoresha buri munsi mu buzima bwabo. Uko tuvuga, uko twandika, ndetse n’uko twitwara mu buzima bwacu bwa buri munsi ni uburyo butandukanye bw’itumanaho. Ariko itumanaho ntiriba rifite umumaro igihe ubutumwa butumvikanye uko nyirabwo yabwifuzaga. Ni yo mpamvu itumanaho rinoze rifatwa nk’inkingi y’iterambere n’ubwumvikane mu bantu.
Iyo abantu bavugana neza, bakumvikana kandi bakuzuzanya, bubaka umubano ukomeye uharanira icyiza rusange. Mu miryango, itumanaho rinoze rifasha abashakanye n’abana kubana neza, kumva ibyifuzo by’abandi no gukemura ibibazo hatabayeho amakimbirane. Mu kazi, rifasha abakozi n’abayobozi gukorera hamwe, gutanga serivisi nziza no kugera ku ntego z’iterambere.
Itumanaho rinoze kandi ryubaka ubumwe. Iyo abantu bumva ko batekereza kimwe, bagasabana, bakavugana neza kandi bubahane, bituma bubaka icyizere hagati yabo n’imikoranire myiza. Bituma abantu batizanya imbaraga, bagahuriza hamwe ibitekerezo n’ubushobozi mu nyungu rusange.
Kugira ngo itumanaho ribe rinoze, bisaba ibintu bitanu by’ingenzi: kumva abandi neza, kuvuga mu buryo busobanutse, kwirinda amagambo atesha abandi agaciro, gutekereza mbere yo kuvuga, no gukoresha neza ibimenyetso by’umubiri. Ibi byose bituma ubutumwa butangwa bwumvikana neza kandi bukubaka aho kubangama.
Mu muryango nyarwanda, dukeneye gukomeza kwimakaza itumanaho ryubaka. Ibi bizadufasha kongera ubumwe mu baturage, gukemura ibibazo mu mahoro no kugera ku iterambere rirambye. Nta bwumvikane, nta terambere; nta itumanaho rinoze, nta bwumvikane ibi byose birajyana kandi biruzuzanya.
Muri make, itumanaho rinoze ni urufunguzo rudufasha gutera imbere twunze ubumwe. Ni umusingi dushobora kubakiraho ejo hazaza heza, hatarangwamo amakimbirane, ahubwo hakabamo ubwumvikane, ubufatanye n’amahoro.