Ignorance is a lack of knowledge, or the inability to get it.
Logic 7 is a Patented process with either 5.1 or 7.1, discrete channels obtained from the PCM code of the DVD codec, Harman International now has the patents based upon its purchase of Lexicon. The Logic 7 is not obtained for DD. It has been available on earlier models, as an example the AVR210 which had Logic 7 for 5.1 channels. It seems to me all Knowledge does not flow from Gonk or Kevin Brown, but also is Disseminated elsewhere....just my humble opinion