In the fairly recent case of People vs. Rodico, we emphasized that - "As to the credibility of witnesses it is well established that the findings of fact of the trial court thereon should not be disturbed on appeal said court being in a better position to decide the question, from having itself heard and observed the demeanor of the witnesses on the stand, unless it has plainly overlooked certain facts of substance and value which, if considered, could affect the result of the case. The present case, gives no reason to depart from this rule." [G.R. No. 110100-02. December 11, 1996]
