I have to say that Imagination! has been the most complicated, and thus most difficult, book to write that I have attempted so far.
Without giving away too much of the plot I can tell you that, not far into the book, we are faced with two completely separated groups of human beings. One of them, like yourself, has a fully functional sense of imagination, the other doesn’t. To find out how the people of Earth got themselves into that quandary you’ll have to part with a few quid. All in a good cause (ie me, of course).
It is also fair to mention that Imagination! is a somewhat blasphemous book. Not in a nasty way, I hope but there are a couple of main characters whosenames are Graham Od and Derik de Ville (see where we’re coming from here….) who do get the mickey taken out of them on a fairly regular basis. I intended this to be humorous but some may not agree. Just bear that in mind. Put it this way; should there be national press coverage of a small author being found struck by lightning, you’ll know it’s entirely my own fault.
All that aside, the main thrust of the plot is to consider just how a civilisation where neither man nor woman (or anyone in between) is in possession of the mental facility of imagination might work. Or, to put it another way, as one of the inspiration-free characters says to a normal human being: “Why would I want to read a book about 
something that never happened, with people who were never born, in a place that never existed.” Sounds very strange, I know, but you can see there’s an odd sort of logic at work there somewhere.
What with that and fact that there is a lot about salt in the plot I hope that you can also see why I got a bit confused from time to time. Hopefully I’ve got away with it – but you must be the judge.