Wong Swee Chin V Public Prosecutor [1981] MLJ 212, 214 (FC) per Raja Azlan Shah CJ (Malaya):

But, except on purely scientific issues, expert evidence is to be used by the court for the purpose of assisting rather than compelling the formulation of the ultimate judgments. In the ultimate analysis it is the tribunal of fact, whether it be a judge or jury, which is required to weigh all the evidence and determine the probabilities. It cannot transfer this task to the expert witness, the court must come to its own opinion.