Penal Code 53 (c) the voluntary causing of grievous hurt, or to the attempting to cause grievous hurt, unless it be for the purpose of preventing death or grievous hurt, or the curing of any grievous disease or infirmity; (d) the abetment of any offence, to the committing of which offence it would not extend. ILLUSTRATION A, in good faith, for his child’s benefit, without his child’s consent, has his child cut for the stone by a surgeon, knowing it to be likely that the operation will cause the child’s death, but not intending to cause the child’s death. A is within the exception, in as much as his object was the cure of the child. Consent known to be given under fear or misconception and consent of a child or person of unsound mind 90. A consent is not such a consent as is intended by any section of this Code— (a) if the consent is given by a person under fear of injury, or under a misconception of fact, and if the person doing the act knows, or has reason to believe, that the consent was given in consequence of such fear or misconception; (b) if the consent is given by a person who, from unsoundness of mind or intoxication, is unable to understand the nature and consequence of that to which he gives his consent; or (c) unless the contrary appears from the context, if the consent is given by a person who is under twelve years of age. Acts which are offences independently of harm caused to the person consenting, are not within the exceptions in sections 87, 88 and 89 91. The exceptions in sections 87, 88 and 89 do not extend to acts which are offences independently of any harm which they may cause, or be intended to cause, or be known to be likely to cause, to the person giving the consent, or on whose behalf the consent is given.