Another great one by Mr. Asymco:
My contention is that app time will impact many of these incumbent media and that both the effect and the consequences will be hard to measure in advance or even ex post facto. These new media objects are not measured easily and therefore are flying under the radar of traditional metrics used by the industry. Such absence of reliable measurement is one of the hallmarks of a disruptive shift in industry: You can’t perceive what you can’t measure and you certainly can’t manage it.