Drunkenness can be a defence where D was at the time of the offence so drunk as to be incapable of forming the specific intent necessary for such crimes. As with Beard, self induced intoxication however gross or even producing a condition akin to automatism cannot excuse crimes of basic intent. With crimes of basic intent, the 'fault' element is supplied by D's recklessness in becoming intoxicated, this recklessness being substituted for the mens rea that the prosecution would otherwise have to prove.