▁updates ▁to ▁a ▁system . ▁The ▁words ▁" an om aly " ▁and ▁" dis cre p ancy " ▁can ▁be ▁used , ▁as ▁being ▁more ▁neutral ▁terms , ▁to ▁avoid ▁the ▁words ▁" error " ▁and ▁" def ect " ▁or ▁" bug " ▁where ▁there ▁might ▁be ▁an ▁imp lication ▁that ▁all ▁so - called ▁errors , ▁defect s ▁or ▁bugs ▁must ▁be ▁fixed ▁( at ▁all ▁costs ). ▁Instead , ▁an ▁impact ▁assess ment ▁can ▁be ▁made ▁to ▁determine ▁if ▁changes ▁to ▁remove ▁an ▁anom aly ▁( or ▁dis cre p ancy ) ▁would ▁be ▁cost - effect ive ▁for ▁the ▁system , ▁or ▁perhaps ▁a ▁scheduled ▁new ▁release ▁might ▁render ▁the ▁change ( s ) ▁unnecessary . ▁Not ▁all ▁issues ▁are ▁safety - crit ical ▁or ▁mission - crit ical ▁in ▁a ▁system . ▁Also , ▁it ▁is ▁important ▁to ▁avoid ▁the ▁situation ▁where ▁a ▁change ▁might ▁be ▁more ▁ups et ting ▁to ▁users , ▁long - term , ▁than ▁living ▁with ▁the ▁known ▁problem ( s ) ▁( where ▁the ▁" c ure ▁would ▁be ▁worse ▁than ▁the ▁disease "). ▁Bas ing ▁dec isions ▁of ▁the ▁accept ability ▁of ▁some ▁anom al ies ▁can ▁avoid ▁a ▁culture ▁of ▁a ▁" zero - def ect s " ▁mand ate , ▁where ▁people ▁might ▁be ▁tempt ed ▁to ▁den y ▁the ▁existence ▁of ▁problems ▁so ▁that ▁the ▁result ▁would ▁appear ▁as ▁zero ▁defect s . ▁Consider ing ▁the ▁coll ater al ▁issues , ▁such ▁as ▁the ▁cost - vers us