In the Case of Williams V

In the case of Williams v. State, the prosecution had used a presumption to help to gain a murder conviction. The evidence showed that the defendant had pointed a firearm at the deceased that discharged while in the hands of the defendant. The prosecution made use of a presumption that stated a person intends the natural and probable consequences of his voluntary and delivered activities to help obtain the conviction. The defendant appealed, contending that the use of this presumption in this murder case had the effect of shifting the burden of proof from the prosecution to the defense. The reviewing court ordered a new trial for the defendant. What was the rationale that the reviewing court used in determining that the way the presumption was handled in this case created reversible error? Explain.