I've managed to go through the whole book (with skipping details that not necessary for grasping what he wants to say, and otherwise don't interest me).
What he basically says is nothing new, as such, but I haven't seen it presented in a book before and in this way with elaboration on the pertinent historical events and trends, in the flux of time.
A summary from my perspective, not exactly how & what he said:
The big planetary cycles of the outers act as wheels-within-wheels on rotational basis, with each conjunction between two bodies marking a new round in their cycle.
Inside each cycle, there are phases, marked by the aspects (he considers the: semi-sq, sextile, square, trine, sesqui-sq and opposition) that the two involved planets make between their one and another conjunction (it's easy to visualize this by thinking of the Lunar cycle, the slower planet is analogous to the Sun and the faster to the Moon - each aspect is a phase, actually a transition from one phase to another, inside one full cycle of the dynamic inter-relationship of the two).
So, at any given point of time, there are multiple cycles going on, in their different phases.
What marks important period on the world stage are:
--> times of conjunctions of outers;
--> times when there are configurations between them, with more than 2 planets involved; this is very wide, and includes not only when a faster planet conjoins a pair of other slower two in their configuration (like we had a case with Pl, Sa and Ju at this time), but also any aspect that a third faster planet, or a pair, comes to make with this slower configuration (say, for example: there's a Pl-Ur opposition goin on, and Ju-Sa come to be connected to it by an aspect, any aspect, each/both of them), as well as when there are multiple, mutually non-related-by-aspect, configurations of outers simultaneously going on.
The key-points in every cycle are the Conjunctions and the Oppositions; the conjunctions are the primary markers of big turns, and naturally the slowest ones are the widest rhythmical frameworks that we observe.
We can say that each pair of the outers addresses a specific 'facet'/aspect/'functional-realm' of the collective psyche, and their cycle depicts one basic unit of our development in this regard.
... so, to put it in the briefest: they dance, moving around each in own speed, and as they touch (conjunct) or significantly glance at each other (aspect), that's when we need to be spying on them
, and especially if there's a party going on with grouping of multiple dancers mutually involved in some touching or stare-exchanging
- and, of course, be especially mindful of the times when among the party attendees there are the ones that most rarely have any touching-kissing
