案件中的蜗牛导致疏忽案件发生重大变化。只有合同造成的疏忽和伤害才会改变，包括一个更大的人民群体，那些可能与被告没有合同的人。 Donoghue v Stevenson案件为这些人的身份给出了答案，将他们定义为邻居之间的关怀关系。尽管上议院的其他成员警告说，这起案件判决可能会导致太多复杂的案件围绕着哪个人的邻居的定义，但案件判决是一个着名的案件判决。案件判决被认为是先例，从此以后它就被用于法庭（Stapleton，2003）。护理责任和违背护理责任的概念在法院得到更广泛的承认，并且自从这一类别建立以来，还有许多更复杂的类别也进入法庭诉讼。 “爱你的邻居的规则在法律上是成立的，你不能伤害你的邻居和律师的问题，谁是我的邻居？收到有限的回复。“（Donoghue v Stevenson  AC 562）。处理新案件的普通法要求法院利用着名的Donoghue案件后出现的先例法解决人与人民的共存问题。
The Snail in the Bottle case led to a significant point of change for the negligence cases. Negligent and injury by contract only, changed to include a larger subsection of the people, people that might not have a contract with the defendant. The Donoghue v Stevenson case gave an answer for who these people are, defining them as the neighbours in a relationship of duty of care. Although it was warned by other members of the House of Lords that this case judgment could lead too many complex cases revolving around the definition of which one’s neighbour is, nevertheless the case judgment is a famous one. The case judgment was considered a precedent and it has been used in courts ever since (Stapleton, 2003). The concept of duty of care, and breach of duty of care came to be more widely recognized in courts and ever since many more complex categories also came into court actions since this category was established. “The rule that you are to love your neighbour becomes in law, you must not injure your neighbour, and the lawyer’s question, who is my neighbour? Receive a restricted reply.” (Donoghue v Stevenson  AC 562). The common law in dealing with novel cases requires the courts to address the co-existence of people or peoples using precedent law that came into existence after the famous Donoghue case.
The Neighbourhood Test
In this context any person must act in such a way that they take reasonable care to ensure they do not harm their neighbour. The neighbour is a person that may be ‘reasonably foreseeable’ as being affected by the actions or the omission of actions.