The first law of geography according to Waldo Tobler is "Everything is related to everything else, but near things are more related than distant things."

This observation is embedded in the gravity model of trip distribution. It is also related to the law of demand

Law of demand

In economics, the law of demand is an economic law that states that consumers buy more of a good when its price decreases and less when its price increases ....

, in that interactions between places are inversely proportional to the cost of travel between them, which is much like the probability of purchasing a good is inversely proportional to the cost.

It is also related to the ideas of Isaac Newton

Isaac Newton

Sir Isaac Newton PRS was an English physicist, mathematician, astronomer, natural philosopher, alchemist, and theologian, who has been "considered by many to be the greatest and most influential scientist who ever lived."...

's Law of universal gravitation and is essentially synonymous with the concept of spatial dependence

Spatial dependence

In applications of statistics, spatial dependence is the existence of statistical dependence in a collection of random variables or a collection time series of random variables, each of which is associated with a different geographical location...

 that forms the foundation of spatial analysis

Spatial analysis

Spatial analysis or spatial statistics includes any of the formal techniques which study entities using their topological, geometric, or geographic properties...

.

The link structure of Wikipedia's collection of geolocated articles has been demonstrated to be consistent with Tobler's first law of geography.