The settled principle of law is that it is the trial court which alone has the primary function of fully considering the totality of evidence placed before it, ascribe probative value to it. Put same on the imaginary scale of justice to determine the party in whose favour the balance tilts, make the necessary findings of facts flowing therefrom, apply the relevant law to the findings and come to the logical conclusion. The evaluation of evidence remains the exclusive preserve of the trial Court because of the its singular opportunity of hearing and watching the demeanour of witnesses as they testify and thus the court best suited to assess their credibility of a witness an appellate court would not ordinarily interfere.
— F.F. Tabai, JSC. Mini Lodge v. Ngei (2009) – SC.231/2006