10 I have carefully examined the evidence of those witnesses. It is plain that each of them significantly relied upon what the appellant had told them. During argument, counsel for the appellant conceded, and in my view correctly conceded, that in order to succeed on ground 6, and indeed to succeed on this appeal at all, the appellant needed to be able to point to circumstantial evidence from which the only reasonable inference that could be drawn is that there was expert medical opinion evidence to the effect that, assuming that the appellant had misled the person giving the opinion with respect to the extent of the appellant's symptoms or disability, it was more probable than not that since about the end of 1985, the appellant had actually perceived disabling symptoms, that such symptoms were non-organic in origin and that their cause was exposure to identifiable psychological stressors during the period that the learned trial judge found the appellant to be disabled, and that the learned trial judge erred in failing to draw such an inference.