The data enquiry for SITHD is based on the idea that information must be structured in some method and in order to be mined or harvested by the user it must make sense to him. This means that the SITHD system doesn't try to guess what the user is looking for or prioritize for him, but relies on his (or her) desire to introspect the data for himself in as raw and unprocessed form as possible.
The Sith Daemon is the replacement for the Refata system which is now deprecated.
In some ways, sitdh.com tries to take a step back to the original Internet Search.
Nothing is only nothing, if it's completely undefined, yet everything is there, as explained by Miyamoto Mushashi in Gorin No Sho
"A heuristic technique ("find" or "discover"), often called simply a heuristic, is any approach to problem solving, learning, or discovery that employs a practical method, not guaranteed to be optimal, perfect, logical, or rational, but instead sufficient for reaching an immediate goal. Where finding an optimal solution is impossible or impractical, heuristic methods can be used to speed up the process of finding a satisfactory solution. Heuristics can be mental shortcuts that ease the cognitive load of making a decision. Examples that employ heuristics include using a rule of thumb, an educated guess, an intuitive judgment, a guesstimate, stereotyping, profiling, or common sense." ~Wikipedia
(https://en.wikipedia.org/wiki/Heuristic and https://en.wikipedia.org/wiki/Heuristic_(computer_science).)