From: Robert Stevens <robert.stevens@ucl.ac.uk>
To: obligations@uwo.ca
Date: 14/10/2010 15:06:27 UTC
Subject: RE: Question about reasonable but mistaken belief in consent

Groan, as two people have now pointed out I meant "plaintiff" not "defendant".
That'll teach me for criticising the formulations of others.
R


From: Robert Stevens [mailto:robert.stevens@ucl.ac.uk]
Sent: 14 October 2010 15:18
To: obligations@uwo.ca
Subject: RE: Question about reasonable but mistaken belief in consent

McLachlin J's formulation is wrong.
 
If the defendant is responsible for creating the impression of consent it doesn't matter if they do not actually consent. If I enter into a boxing ring wearing gloves I have created the impression that I consent to be hit, even if I don't subjectively want to be. So, no battery if the other boxer mistakenly but reasonably thinks that there is consent. It is that type of case McLachlin must have in mind in her loose formulation as that is what Scalera is about. (The decision itself is right).
 
However, if I mistakenly think you have consented to kiss me, and you haven't and are not responsible for my mistake, it doesn't matter how reasonable my mistake is. The unconsented to snogging is a tort, in principle at least.
RS


From: Bruce Pardy [mailto:pardyb@queensu.ca]
Sent: 14 October 2010 14:20
To: obligations@uwo.ca
Subject: Question about reasonable but mistaken belief in consent

Can anyone clarify a consent issue for me?  In Scalera (SCC), McLachlin says that to establish the defence of consent, the defendant may prove that the plaintiff consented, or that a reasonable person in the position of the defendant would have believed that the plaintiff consented.  In other words, even if the defendant has made a mistake in concluding that the plaintiff consented, that mistake, if reasonable, may allow the defendant to avoid liability for battery.  So for instance if the plaintiff joined a game of hockey believing it to be non-contact and was body-checked by the defendant, the plaintiff did not consent to the body-check, but the defendant reasonably concluded that he did.  So no liability.

On the other hand, as a general rule, mistake is not a valid defence to an intentional tort.  For example, In Turner v Thorne the defendant made a delivery to the wrong address, and liability in trespass followed even though the defendant reasonably thought he was at the right place.  This mistake could be expressed as mistake about consent: the owner of the right address had given consent to the delivery, so if the defendant reasonably thought he was at the right address, his belief in consent must have been reasonable.  But this mistake does not relieve him of liability.

One way to distinguish between the two is to say that in the hockey game, the plaintiff's actions were the source of the defendant's reasonable but mistaken belief in consent, but with respect to the delivery, the plaintiff had no role in producing the defendant's reasonable but mistaken belief.  Another might be to say that in the first situation, the mistake about consent is "direct", whereas in the second, mistake about consent arises because of another mistake about a collateral matter (the address).  Can anyone clarify for me, or identify any other principled difference between these two kinds of scenarios?

Many thanks,
Bruce

________________________

Bruce Pardy
Professor
Faculty of Law
Queen's University
Kingston, ON
K7L 3N6

pardyb@queensu.ca
613-533-6000 ext 77570
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Website http://law.queensu.ca/facultyAndStaff/facultyDirectory/pardy.html
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