DISCLAIMER: Wall of text ahead. Abandon hope, all ye for whom 850 words is too much.
With 6th edition adding some new types of rules, I thought it might be helpful as a community to discuss the relationship between codices and the basic rulebook (“BRB,” for those of you new to 40K internet slang).
The old saw goes “codex trumps rulebook,” as if 40K rules were a game of hearts (“I play the king of BRB.” “Ha! I trump you with the three of Dark Eldar!” “Argh, you win!”). But this is not actually what the rules say. The BRB actually says that that in the “rare” instances where the BRB and a codex “conflict,” the codex “takes precedence.” More on what this means in a minute. For the moment, let’s look at what this doesn’t mean.
Some players treat codices as if they were a higher sort of rule than the BRB, almost as if they were a constitution. For those of you who haven’t gone to law school, stick with me for a quick law primer. In the United States, “law” comes in several different flavors. One flavor is constitutional. Another is statutory (there are others, but they aren’t important to the analogy I’m drawing). For our purposes, the important difference is that constitutional law is a higher law than statutory law. If the federal constitution says, “Neither slavery nor involuntary servitude … shall exist in the United States,” Congress cannot enact a statute that creates slavery in the United States. Congress cannot even enact a statute that says, “Notwithstanding the federal constitution, slavery shall exist in the United States,” even if the constitutional law is over 100 years old and the conflicting statutory law is brand new. If a statute says the sky is blue, and the constitution says the sky is black, the sky is black. Constitution really does trump statute.
Now that we have in mind an example of one set of rules “trumping” another, I can say this: codex does not trump rulebook. Consider the Force Organization Chart. The BRB says that the Force Organization Chart includes, allies, fortifications, and second primary detachments, even if your codex says that the Force Organization Chart consists only of the old familiar 1/2HQ, 2/6 Troops, 3 Elites, 3 Fast Attack, 3 Heavy Support chart. Think about this for a moment. If the codex really did trump the rulebook, it wouldn’t matter that the BRB expands the FoC. The codex says the FoC looks like X, the BRB says the FoC looks like Y, codex trumps rulebook, the FoC looks like X. Sorted. Done and dusted. Full stop.
Do any of us really believe, even in our deepest darkest rules lawyeriest hearts of hearts, that this is the way the game works? I submit that we do not. So let us consider what the relationship between codex and BRB actually looks like.
Remember that the BRB says nothing about “trumping.” What it actually says is that in the case of a “conflict,” the codex “takes precedence.” Here is the critical question: what does the BRB mean by conflict?
Some players – let’s call them Codex Constitutionalists – seem to think that “conflict” means “the implications of a codex rule for situation X contradict the implications of a BRB rule for the same situation.” We have already seen that this is not true. If it were, the BRB would not be able to expand our FoCs. But there is another option. “Conflict” could mean “a codex rule explicitly contradicts a BRB rule.” This would not come up nearly as often as the Codex Constitutionalists like to play the “codex trumps rulebook” card. But then, the BRB itself states that “conflicts” will be “rare.”
As evidence that this is how GW itself views “conflicts,” consider the infamous Hard to Hit rule. As the BRB FAQ recently clarified, Hard to Hit says, “Only Snap Shots can hit Zooming Flyers and Swooping Monstrous Creatures.” Now consider Thunderclap, a Space Wolves psychic shooting attack that places a large blast marker in touch with the casting rune priest, and automatically hits “any model touched by the marker.” As many of you know, GW recently answered via FAQ the question of whether powers like Thunderclap can hit Zooming Flyers and Swooping Monstrous Creatures. Their answer was no.
How can this be? The Space Wolves codex states, plain as day, “any model touched by the marker.” Is that Swooping Harpy a model? Yes? Is it touched by the marker? Yes? Then it’s hit! cry the Codex Constitutionalists. Codex trumps rulebook!
Except, evidently, it doesn’t. If it did – if codices were really “higher law” the way constitutions are – then GW wouldn’t have, couldn’t have, answered the way it did.
So what are we looking for? Not a case where a codex rule’s mere implications contradict the BRB, but where a codex rule’s text contradicts the BRB. Not a case where the BRB says the sky is black and the codex says the sky is blue. We’re looking for the BRB saying the sky is black and the codex saying the sky is not black.
Can anybody think of such an instance? So far I can’t.