Remarks about two matters :

1. Re " The meme is one of Dawkin's candidates for the "software
innovation" that launched the self-feeding spiral of explosive co-evolution
that inflated the human brain so far beyond those of any other animal's" :

First I recommend looking up MS Gazzaniga's "The Split Brain Revisited" ,
in July 98 Scientific American.  Next I suggest a footnote to this
excellent Gazzaniga account, to suggest the origin of the difference from
other animals :

My conjectural guesstimate is that as the early Human adopted a two-feet
posture his field of vision, his perspective, underwent a vast extension
with new impressions to assess and analyse. This new requirement used up
some of his existing brain functionality and concurrently set up a creeping
contralateralization in compensation for the lost functionality. The
progress of contralateralized compensation  may be alternatively in one
half then in the other half of the brain. Most probably the human brain is
still in the process of evolutionary development in this general
direction...

2. Re the reviewer's occasional reference to relationships between three
distinct classes of people, these being  (a) we , us, ourselves  (b) the
public, and (c) our patrons.  This psychological slip can fuel an extensive
analysis of his concepts and attitudes and his complexes... I like to think
that he is not representative of a wide WE group.

Dov Henis