Part 2: In connection with Arich’s own intrinsic mode of government… You have already heard how the lights change their names and states depending on their functions. What is reckoned as a level on its own in one function may be considered as merely a part of a more encompassing level in some other function. On the other hand, what was included as a part of another level in one function may be reckoned as a level by itself in a different function. (Thus in connection with Arich Anpin’s own intrinsic functioning we reckon two Heads – the Skull and the Brain – while the Cavity [אווירא, avira] is considered as included in the Brain.
However with regard to Arich’s function of generating Zeir Anpin, the Cavity is considered as a Head in itself – the middle Head.) They are the same lights: all the distinctions between them relate to their different functions. Thus in one aspect the lights of Arich Anpin are arranged in one order and in a different aspect they are arranged in a different order.