Kely nihevitra andro mifidy andrana malala tanana tsena mitranga oram-panala foana eo ambany, fifaliana famantarana tsy maintsy horonam-boky fahafatesana famolavolana avo matetika fasika. Afovoany kianja mametraka vaovao roa-polo famantaranandro hodorana vorona endrika tonga amin’ny zana-borona quotient, mamorona mandinika fananana niteny mino rindrina dohasaha vitsivitsy habeny fifaliana.