, PLEASE USE THIS DOCUMENT AS A GUIDE TO ANSWER YOUR ASSIGNMENT
1. Discuss fully the type of mistake that is relevant to this question and advise Raymond if the
contract he concluded with Jabu is valid or void. Refer to case law in your answer. Do not
discuss latent defects and breach of contract. And do not apply the Consumer Protection Act 68
of 2008 to this question.
Answer 1
Relevant Type of Mistake
In this case, the type of mistake that is most relevant is material mistake. A material mistake, as
defined in contract law, occurs when one or both parties to a contract are mistaken about a
fundamental fact that is crucial to the agreement. This mistake can either relate to the subject matter
of the contract, or it may pertain to the identity of the parties involved or the terms of the agreement.
According to Hutchison et al. (2022, p. 92), a material mistake about the subject matter can affect the
validity of the contract, as it involves a misunderstanding of a core aspect of the agreement. In this
case, Jabu and Raymond both based their agreement on the understanding that the item being sold
was a genuine diamond ring, which is a fundamental element of the contract.
However, when Raymond later learns from Themba, a diamond expert, that the ring is not a genuine
diamond but a fake, this indicates that the contract was entered into on the premise of a mistaken
belief about the core nature of the object being bought and sold. The mistake here is a material
mistake of fact, as it pertains directly to the item being sold—the ring’s authenticity. This mistake
affects the value and nature of the item, which is critical to the contract because Raymond’s decision
to purchase the ring for R80,000 was likely influenced by the belief that he was purchasing a genuine
diamond. In other words, the mistake concerns the quality and identity of the subject matter, which is
vital for the validity of the agreement.
According to Study Guide PVL3702 (p. 55), material mistakes are those that affect a party’s
understanding of a significant aspect of the agreement, leading to a lack of consensus ad idem
(meeting of the minds). In this case, both Jabu and Raymond believed they were dealing with a
genuine diamond ring, but the mistake of fact—that the ring is not genuine—disrupts their mutual
understanding and the basis on which the contract was concluded.
Validity of the Contract
The legal effect of a material mistake is significant in determining the validity of the contract. When
a contract is based on a material mistake of fact, it can make the contract voidable, meaning that the
party affected by the mistake (in this case, Raymond) has the option to either affirm the contract or
rescind it. This distinction is important because not all mistakes render a contract void; some
mistakes only render the contract voidable, depending on the circumstances.
In this case, because Raymond was led to believe that the ring was a genuine diamond when it was
not, he could argue that the contract was concluded under a false assumption regarding the nature of
the subject matter. This would be classified as a mistake in substancia (mistake about the substance
or quality of the subject matter), which affects the very essence of the agreement. As a result, the
mistake goes beyond a mere error in motive (a mistake about why the contract is being made) and
becomes material, thereby potentially voiding the contract (Study Guide PVL3702, p. 57).
1. Discuss fully the type of mistake that is relevant to this question and advise Raymond if the
contract he concluded with Jabu is valid or void. Refer to case law in your answer. Do not
discuss latent defects and breach of contract. And do not apply the Consumer Protection Act 68
of 2008 to this question.
Answer 1
Relevant Type of Mistake
In this case, the type of mistake that is most relevant is material mistake. A material mistake, as
defined in contract law, occurs when one or both parties to a contract are mistaken about a
fundamental fact that is crucial to the agreement. This mistake can either relate to the subject matter
of the contract, or it may pertain to the identity of the parties involved or the terms of the agreement.
According to Hutchison et al. (2022, p. 92), a material mistake about the subject matter can affect the
validity of the contract, as it involves a misunderstanding of a core aspect of the agreement. In this
case, Jabu and Raymond both based their agreement on the understanding that the item being sold
was a genuine diamond ring, which is a fundamental element of the contract.
However, when Raymond later learns from Themba, a diamond expert, that the ring is not a genuine
diamond but a fake, this indicates that the contract was entered into on the premise of a mistaken
belief about the core nature of the object being bought and sold. The mistake here is a material
mistake of fact, as it pertains directly to the item being sold—the ring’s authenticity. This mistake
affects the value and nature of the item, which is critical to the contract because Raymond’s decision
to purchase the ring for R80,000 was likely influenced by the belief that he was purchasing a genuine
diamond. In other words, the mistake concerns the quality and identity of the subject matter, which is
vital for the validity of the agreement.
According to Study Guide PVL3702 (p. 55), material mistakes are those that affect a party’s
understanding of a significant aspect of the agreement, leading to a lack of consensus ad idem
(meeting of the minds). In this case, both Jabu and Raymond believed they were dealing with a
genuine diamond ring, but the mistake of fact—that the ring is not genuine—disrupts their mutual
understanding and the basis on which the contract was concluded.
Validity of the Contract
The legal effect of a material mistake is significant in determining the validity of the contract. When
a contract is based on a material mistake of fact, it can make the contract voidable, meaning that the
party affected by the mistake (in this case, Raymond) has the option to either affirm the contract or
rescind it. This distinction is important because not all mistakes render a contract void; some
mistakes only render the contract voidable, depending on the circumstances.
In this case, because Raymond was led to believe that the ring was a genuine diamond when it was
not, he could argue that the contract was concluded under a false assumption regarding the nature of
the subject matter. This would be classified as a mistake in substancia (mistake about the substance
or quality of the subject matter), which affects the very essence of the agreement. As a result, the
mistake goes beyond a mere error in motive (a mistake about why the contract is being made) and
becomes material, thereby potentially voiding the contract (Study Guide PVL3702, p. 57).
