I took Sussman's course in '87 with a $30 used copy of SICP which still sits on my shelf, surviving many other books that have long since faded into obsolescence.
From the preface: "Our design of this introductory computer-science subject reflects two major concerns. First, we want to establish the idea that a computer language is not just a way of getting a computer to perform operations but rather that it is a novel formal medium for expressing ideas about methodology. Second, we believe that the essential material to be addressed by a subject at this level is not the syntax of particular programming-language constructs, nor clever algorithms for computing particular functions efficiently, not even the mathematical analysis of algorithms and the foundations of computing, but rather the techniques used to control the intellectual complexity of large software systems."
All they're saying is: "We're integrating Reader more tightly with G+ but if that integration offends you, here's how to take your data out."