57 This ground seems to me, with due respect, to confuse two issues. It is established that, in this context, mere intention is not enough. As was said in R v Beck [1990] 1 Qd R 30 at 37, per Macrossan CJ, with whom McPherson J was in agreement, it is not possible to be an aider, whatever the intention, unless support for the commission of the offence is actually provided. However, that does not mean that the Crown is required to prove that, without the aid, the offence would not have been committed or that the principal offender would somehow have been less effective in committing the offence. All it means is that there must actually have been support for the commission of the offence in the form of some deliberate, positive involvement when the offence occurs (see Beck, above, at 38, per Macrossan CJ). This involvement need not be active, physical involvement and, in this context, voluntary and deliberate presence during the commission of a crime, without opposition or real dissent, has been said to be conduct which may provide evidence of wilful encouragement or aiding. (See Beck, above, at 37).