3.5 Reasonable Doubt-Defined is a legal standard of proof that is required for a conviction in a criminal trial. The standard requires that the jury must be convinced of the defendant's guilt beyond a reasonable doubt, meaning that the evidence must be strong enough to leave no doubt in the minds of the jurors that the defendant is guilty. There are two types of reasonable doubt: direct reasonable doubt and circumstantial reasonable doubt. Direct reasonable doubt is proof that directly contradicts the prosecution's case, while circumstantial reasonable doubt is proof that does not directly contradict the prosecution's case but suggests the defendant's innocence.