Final answer:
The question likely refers to the legal principle or 'ratio decidendi' from a case named vanbergen v st edmunds. Without more information, it is not possible to provide the specific ratio, as no such case is widely recognized in legal databases.
Step-by-step explanation:
The term 'ratio' in a legal context typically refers to the ratio decidendi which is the court's reasoning for the decision in a case. It sets out the legal principle that the case establishes. Unfortunately, without additional context or a recognized citation, it is not possible to provide a specific ratio as no widely known case by this name exists in the databases or legal resources.
It is important when applying legal principles to have an accurate citation and an understanding of the jurisdiction in which the case was heard, as this affects the applicability and authority of the case's decision. If vanbergen v st edmunds is from a specific country or legal system.