Section 16 of the Code is specifically directed to punishment for acts or omissions. What are the relevant acts in question here? I consider that they are the driving by the appellant on the road at the place and time while he had ingested the amount of alcohol which was in fact within his system. His ingesting that amount of alcohol had, in this case, two consequences which may be noted - it caused the appellant to be adversely affected by its intoxicating capacity and it also caused his blood alcohol level to be raised and remain above .1 per cent, but these features should be characterised as the results of the appellant's acts rather than as his acts: cf. the analysis undertaken by Gibbs J. in Kaporonovski v. The Queen [1973] HCA 35; (1973) 133 C.L.R. 209 distinguishing between an act and a result of an act for the purposes of s. 23 of the Code. Some of the more difficult problems of distinguishing between acts as properly understood for the purposes of s. 16 of the Code and features which are correctly to be regarded as the consequences of those acts may be left for occasions when the necessity arises to consider them. In the present case it was the act of driving with the alcohol in his system and doing so in the location referred to, accepted as being the same in both offences charged, for which the appellant had, in the words of s. 16, already been punished on conviction by the magistrate. Therefore, the appellant could not again be made the subject of punishment for this act unless the exception specified in s. 16 is regarded as applying for the reason that his act caused the death of Jason Watters. Unless that exception operates, the maximum penalty provided in the case of driving while adversely affected by alcohol could not apply to increase the penalty otherwise provided for dangerous driving causing death under s. 328A. It was not argued that he could not be convicted and punished for dangerous driving causing death simpliciter. The result is that apart from the effect of the exception, the judge would have been obliged to disregard the aggravating circumstance, i.e. both the ingestion of alcohol and the effect caused by it when he came to sentence the appellant. If it is thought that, on one view, this results in something less than the application of perfect justice, then it comes about because there is more than one sentencing principle to be borne in mind and s. 16 of the Code gives definite expression to one such principle, viz. the principle that an offender is not to be punished a second time for the same act: cf. the discussion of Hawkins J. in R. v. Miles (1890) 24 Q.B.D. 423. This principle would apply equally if the appellant had first been convicted and punished for this offence with the circumstance of aggravation under s. 328A of the Code and an attempt were then made to punish him further by charging the summary offence to which attention has been directed.