I found the book a little bit tedious until I passed the 150 pages milestone. I think it was mostly because I didn't like Basso's lack of feelings and that the story was very loose until that point (bits and pieces, here and there). It wasn't a waste of time, but it wasn't at all as good as Pornokitsch made me think it would be. Well, upon rereading his promo-post I realize that his descriptions of the book are spot on, it was just that I had different expectations. Well, on to the extensive thinking on the book:
I don't really have a clear idea on what THE BIG MISTAKE was. Well, I found it kind of stupid to send your heir to the frontlines, but then again, how was he going to get the real "war-experience" (as in knowledge of what war entails) if he didn't watch it up close? But THE MISTAKE? Was it when he went and used imaginary money and made up paper money? That he didn't remove the threat his sister posed? Challenging The Empire?
Well, 'nuff of that since I don't have the answer.
I really like how the banking system is portrayed and how it reflects on what the federal banks did in the real world; how they gamble with their security (or whatever the name was), loaning money they don't have because they've already loaned it to someone else (or somesuch), dealing with imaginary money to create real money and giving paper a worth it doesn't have. (I saw a documentary on this just yesterday and thought to myself "Damn! That's exactly what happened in The Folding Knife!" Add omg-/wtf- and ahaaa-expressions*).
I really like the idea that Bassano/Basso's "past life" is the folding knife in the prologue, something that suddenly and irrevocably dissapears. Also that this is the theory that seems to make the most sense gives it a plus from me.

Well, thanks for bringing this book to my attention, bookclubbers!
/Pablo