25. At the same time, however, the appellate court is expected, nay bound, to bear in mind a finding recorded by the trial court on oral evidence. It should not forget that the trial court had an advantage and opportunity of seeing the demeanour of witnesses and, hence, the trial court's conclusions should not normally be disturbed. No doubt, the appellate court possesses the same powers as that of the original court, but they have to be exercised with proper care, caution and circumspection. When a finding of fact has been recorded by the trial court mainly on appreciation of oral evidence, it should not be lightly disturbed unless the approach of the trial court in appraisal of evidence is erroneous, contrary to well-established principles of law or unreasonable..."