According to Newell in this precis, not. The point of his book is that it's time for each researcher to stop working on little tiny isolated bits of psychology that only explain a few phenomena and that have little or no theoretical content in common with the work of other researchers. See the entertainingly presented examples in 20 questions. Newell strongly believes this: but if he just tells everybody ``you must work on a UTC'', they won't listen. So don't talk, act. Soar is an example of a UTC, but it is not intended as the UTC, and it may not even be a candidate. It may seem presumptuous, but as Warren McCullough said, ``Don't bite my finger, look where I'm pointing''.