Manager-Tools is an amazing podcast. I love it because of its howto and what-to-do approach. However sometimes, I seem to detect in some casts Mark's contempt [maybe that is too strong but it comes out that way] for theory.
I think that is rather unfortunate and is contrary to some of the very things advocated for on the show. For example, most of HBR [which you agree is one of the best business magazines out there is more theory than practice].
In my practice as a techie, I have discovered that the difference between the brilliant solution solvers and the merely good guys is their understanding of theory. Good theory provides a good framework or map of the terrain [but is NOT the terrain] and we all know how ineffective it is to try to wade into new territory without a map.
I have a tremendous respect for Harvard's Clayton Christensen and he makes a very compelling case for the usefulness of theory and how the most difficult problems we face cannot be solved with analysis of data and what currently works. He says and I agree [b]"... theory is a statement of cause and effect"][/b]
Back here at MT ... DISC model is theory ... it works. ..... the problem is that most people don't understand the implicit theories they are using and sometimes those implicit theories are wrong or incomplete.. In the end, the reason most of us love MT is because it is backed by sound theory..... I am yet to see where flawed theory leads to good execution. So Mark & Mike ... keep the excellent good-theory-backed practical advice coming.