Google Search
The next stage of the funnel is a heuristic, a rule of thumb that helps narrow the field of inquiry and work the mystery down to a manageable size.
Roger L. Martin • The Design of Business
Heuristics pertain to the process of gaining (or discovering) knowledge, not by critical thinking and reasoning, but by intelligent guesswork.
Drew Eric Whitman • Cashvertising: How to Use More Than 100 Secrets of Ad-Agency Psychology to Make BIG MONEY Selling Anything to Anyone (Cashvertising Series)
To search is to know that which you seek. The very notion of search requires you to accurately label what you are looking for. Unfortunately, in unknown territory, we don't always know what we are looking for. Navigating unknown territory is an exercise in discovery, not recall.