The argument made by Ms Sexton [for the Crown] in this Court divided this alleged assault into two separate incidents, during both of which the complainant had been seized by the hair and pulled from one position to another. The consequence of this separation was, however, arguably to introduce into counts 1 and 2 a question of latent ambiguity, and hence of possible duplicity. If there were two distinct assaults, the evidence given by the applicant involved a denial that the first assault happened at all, and suggested that the second occurred by accident, or when the applicant was acting to defend himself. Accordingly, the jury may have convicted the applicant on count 2 on the basis of the evidence of either incident, while not having been convinced of his guilt on the other. The jury may have believed the accused's denial of the first incident and rejected his defence of accident, they may have rejected his version of both incidents, or they may have accepted his defence of accident and rejected his denial of the happening of the assault at the front door. If the evidence was to be viewed as having disclosed two incidents, either of which could have justified a conviction on the relevant count, the applicant could not know of which assault he had been found guilty; as to which, see Johnson v Miller [1937] HCA 77; (1937) 59 CLR 467, per Dixon J at 486-490; S v The Queen [1989] HCA 66; (1989) 168 CLR 266, per Dawson J at 274. The applicant was entitled to be informed of the particular act, matter or thing which was the foundation of the charge against him. If Ms Sexton's argument that there were two incidents is correct, it is possible that the jury were not persuaded by the complainant's evidence of what happened at the front door (which the applicant contested) but, in light of the applicant's admission that he pulled her hair in the dining-room, found the second assault proved beyond reasonable doubt. If so, a reversal of the onus of proof on the question of accident would have had critical importance. Alternatively the jury may have been led to disregard the applicant's denial of what happened at the front door, because they were persuaded to prefer the evidence of the complainant as to what happened in the dining-room. Either of these possibilities only goes to emphasize the difficulties which a misdirection on the subject of accident may have caused the defence.[8]