Listening while driving does not equate yo actually studying which requires reading all the sources that Mark cites and they are numerous! Furthermore, what has credentials got to with with interpreting our Constitution? Mark cites many unaccredited sources, but had you actually read the book and looked up the sources you would've know that, thus you wouldn't come across as one of ignorance.
Supreme Court Justice Joseph Story, founder of Harvard Law School:
In the first place, then, every word employed in the constitution is to be expounded in its plain, obvious, and common sense, unless the context furnishes some ground to control, qualify, or enlarge it. Constitutions are not designed for metaphysical or logical subtleties, for niceties of expression, for critical propriety, for elaborate shades of meaning, or for the exercise of philosophical acuteness, or juridical research. They are instruments of a practical nature, founded on the common business of human life, adapted to common wants, designed for common use, and fitted for common understandings. The people make them; the people adopt them; the people must be supposed to read them, with the help of common sense; and cannot be presumed to admit in them any recondite meaning, or any extraordinary gloss.
One doesn't need to be educated by biased professors, legal or otherwise, in order to learn. One just needs the brains & the self determination to seek the truth from those that actually wrote the truth. Anyone who thinks they have to get the answers from others is well, just plain intellectually lazy which is the opposite of what it means to be a patriotic American.