$knowledge = \frac{1}{x}$

where x is the amount of info needed to solve a problem in the knowledge topic

Which in human terms means that the least information you need to understand an issue the most knowledgeable you are on the topic.

Sherlock Holmes is an example of an extraordinary knowledge of deduction.

In IT, a standard user (my mum, for example) might say: “Google is not there!”. What I think is not that the well-known company is bankrupt but that my mum has and Internet issue.

PS: Google is not there comes from a fantastic cartoon (in Italian) about a chat between a mum and a son about internet connectivity.