Anyone who's worked on a database knows that it's a [Bad Thing] to duplicate information in such a way as to require (or permit) updates in different places for the same information.  There's a DB term for this ... normalization?

One reason this is a [Bad Thing] is (as experience has taught us): if there are two places to update something, sometime somewhere someone will update one, and not the other - what began as two identical copies '''will''' diverge over time.

Redundancy (defined as duplication of information in two or more distinct places) can be protective:  one might back up a database, for example, or one might store a checksum somewhere.

The whole point of hypertext is to permit references to be constructed and copied, to permit hyperlinking instead of quoting.  It therefore never makes sense to duplicate information for the purpose of referring to it.

One virtue of Wiki is that it enables full text searching, aka keyword in context searching.  So a Wiki partakes of some of the virtues of a document (editing) and some of the virtues of a DB (searching.)  This is a [Good Thing].  This is why Wiki is useful as a collaborative space and as a repository.

The recurrent desire to construct encyclopaedic indices of cluelessness, most recently expressed in [Call for suggestions for presentation of Tcl Apps] is a form of duplication: duplication of search results.  Someone constructs a plausible search, captures it to a page, and makes an ''index'' out of it.

Publishing pre-digested searches on this wiki is bad, for several reasons:

   1. the constructed/captured searches are an out of date snapshot.
   2. they occupy space in the title space of pages
   3. they '''compete''' with the primary materials for searches.
   4. they necessarily '''duplicate''' information in different places.
   5. they carry with them a hermeneutics, which they tend to reify, and whose privileged expression tends (for reasons 1-4) to drown out other voices.

So, in summary: merely because one individual has difficulty  using the search facilities, and prefers to view his/her information as a pre-digested index, or even a structured pre-digested index (taxonomic pabulum), and merely because that individual has successfully constructed a search on some occasion is '''no reason''' for that individual to construct a so-called ''index'' page as a monument to their transitory moment of glory.