casa and strict liability
From the Criminal Code:
Division 6—Cases where fault elements are not required
6.1 Strict liability
(1) If a law that creates an offence provides that the offence is an offence of strict liability:
(a) there are no fault elements for any of the physical elements of the offence; and
(b) the defence of mistake of fact under section 9.2 is available.
(2) If a law that creates an offence provides that strict liability applies to a particular physical element of the offence:
(a) there are no fault elements for that physical element; and
(b) the defence of mistake of fact under section 9.2 is available in relation to that physical element.
(3) The existence of strict liability does not make any other defence unavailable.
And Section 9.2 says:
9.2 Mistake of fact (strict liability)
(1) A person is not criminally responsible for an offence that has a physical element for which there is no fault element if:
(a) at or before the time of the conduct constituting the physical element, the person considered whether or not facts existed, and is under a mistaken but reasonable belief about those facts; and
(b) had those facts existed, the conduct would not have constituted an offence.
(2) A person may be regarded as having considered whether or not facts existed if:
(a) he or she had considered, on a previous occasion, whether those facts existed in the circumstances surrounding that occasion; and
(b) he or she honestly and reasonably believed that the circumstances surrounding the present occasion were the same, or substantially the same, as those surrounding the previous occasion.
I think that means you are a "cooked goose"! but smarter people than I may have a view.