Mu myaka yashize, hamwe no kwiyongera gahoro gahoro gusaba ibisabwa kubikoresho biciriritse kandi birebire birebire amaso ya lazeri, hasabwa ibisabwa hejuru kubipimo byerekana ibirahuri by'ibirahure, cyane cyane ikibazo cy'uko umusaruro mwinshi wa mJ urwego ibicuruzwa bitanga ingufu nyinshi ntibishobora kugerwaho mubushinwa muri iki gihe., gutegereza gukemurwa.