Ken's Law

Techopedia explains Ken's Law

Although Ken’s law may not be much used outside of the geocaching community and other specific science applications, there is a major controversy over whether this theory can be backed up in practice. Some believe that it’s simply common sense that a smaller object is more difficult to find, while others argue that Ken’s law fails to take many other factors into account, many of which are related to the environment in which the object is hidden.

Critics of Ken’s law could make some fairly sensible cases against its reliability. For example, one could easily argue the difference between finding two identically sized objects, one on a plain, and the other in a complex, environment. However, it can also be argued that in general, Ken’s law can hold true, given a certain statistical sample and controlled factors.