How does not speaking to one's neighbors for years indicate being from London?

In London, it is not uncommon for neighbors to live next to each other for years without ever speaking. This behavior is often referred to as the 'London Rule' or the 'Code of the Urbanite.' The origins of this rule are not entirely clear, but it is believed to be rooted in the city's long history of social stratification and class-consciousness. In a city as densely populated and diverse as London, people often prefer to keep to themselves, minding their own business and avoiding potential conflicts.

According to some, the rule also serves as a way to establish boundaries and maintain privacy in a city where personal space is at a premium. By not engaging in small talk with neighbors, Londoners are able to maintain a sense of distance and independence, while also avoiding the potential pitfalls of getting too involved in one another's lives. This can be especially important in a city where social class and cultural differences can create barriers to communication and understanding.

While the 'London Rule' may seem strange to outsiders, it is an important part of the city's culture and social dynamics. For Londoners, it is simply a way of life.