What's the consensus here, (median agreement maybe)?

Prototypes are good and useful, in certain circumstances?
User testing is good and useful, for novices and novelties?

I use prototypes every day, (I call them prototypes, and haven't had any
misunderstanding with what they are except by inference in posts like this,
(OK sometimes clients think they actually work, but they can be educated
otherwise)).

Prototypes help me in a multitude of ways such as:
  Detailing interaction of Requirements thru a GUI, (which aides the
requirements definition)
  Presenting to stakeholders what they're going to get, (aides in buy in and
feedback)
  Testing artifact for User testing, (User testing is good for a number of
reasons, one being that you just never know how your target user is going to
react to a design, without seeing it)
  Describing to engineering what to build, (engineers like screens and
dislike long documents)
  Detailing to QA what to test
  Documenting what was built in a release

Also the prototypes are used as a sales tool, and as a baseline for further
rapid prototyping. I've worked with only documentation as well, it just
doesn't seem to be as well accepted.

I can't imagine the "Most Experienced" Interaction Designer "Not" being
aided with prototyping. Who is this omnipotent individual that knows exactly
what to design, besides when designing the most trivial products, (Ok I
guess they could have equivalency with just documentation, but I still think
prototypes are often a better solution)?




-- 
Joseph Rich Rogan
President UX/UI Inc.
http://www.jrrogan.com
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