The absence of a finding (express or implied) by a trial court that a witness does not understand the nature and import of the oath or affirmation due to ignorance arising from youth, deficient education or other cause, necessarily has the effect that evidence given thereafter, after the witness has been warned to tell the truth, cannot be regarded as evidence, but it does not mean that such evidence must be entirely disregarded when assessing the merits of the case in terms of section 52(3) of the Criminal Law Amendment Act 105 of 1997. However, the mere absence of an inquiry to determine whether this is the case does not necessarily have that same effect.