I'll dispute it. If I cram more code into a single line it will not lower my defect count. In fact there is a chance that the concision may turn into clutter and become harder to read/maintain and that may increase defect count.

Is there a measurement term for number of symbols (in the lisp sense) in a given program? Example: '+', 'add', 'defn' would all be individual symbols. I could see a loose correlation between symbol count and defect count... maybe.

Or to go even more abstract: number of concepts per program is probably the ultimate measurement we are looking for: https://en.wikipedia.org/wiki/Concept