All three of those explanations are perfect examples of overthinking something for no better reason than to overthink it.
How much more straight forward, common sense, and enjoyable to GM and Play is… …well… …just about every other RPG combat system ever made?
Heck, even MERP makes more sense that that, and in MERP it is theoretically possible to take a wound to the foot and have the top of your head explode.
Can you please explain some of the concept design choices that were made when it was decided to go for a system so abstract that it is all but useless, and even the Rules Author’s explanation don’t actually make anything at all any clearer.
Was the desire of “one rule for everything” so great that it created a terminal blind-spot for just how poorly explained that rule was, and how it was intrinsically flawed to the extent that you not only had to repeat it 6 times (and still say essentially nothing) but were completely incapable of putting a working example of a complete combat - of any kind - in the rulebook?
In combat for example; what is the thinking behind the statement “remember, you won’t get to attack every round”? I mean that makes absolutely no sense at all given that the explanation you were giving was about Dueling - where both combatants are already “engaged” and at Melee Range.
I am honestly struggling to grasp what the thinking was behind these rules, other than “we have to have one rule do everything the same” - which, by the way, is probably the very worst decision any game designer could ever make; because the things you are trying to represent with the rules fall into very different categories.
Stabbing someone with a knife is - even its most abstract - completely different to hacking a computer, or driving a car, or seducing a partner.
You rules fail to recognise this, and that is largely why a) there are threads here asking for much, much better explanations (which we still aren’t getting by the way) and b) the rules are effectively not fit for purpose.
I have just written a review for Amazon UK, and my closing statement is this:
As much as I love the source material in the book, I can honestly say there is no chance at all I’ll be running Dune using these rules, they are simply not fit for purpose.
I genuinely hope my review spares anyone else from wasting money on a product that doesn’t even attempt to be what it claims to be.