Explanation:

- Section 80: This section pertains to acts done by accident or misfortune without criminal intent, not related to infancy.

- Section 81: This section covers acts likely to cause harm but without criminal intent, performed to prevent greater harm. It's unrelated to infancy.

- Section 82: This section provides that nothing is an offense if it is done by a child under seven years of age. This is the law regarding infancy.

- Section 83: This deals with acts of children between seven and twelve years who lack sufficient maturity to judge the nature of their acts.