The problem, in a sense, is knowing how to deal with both the uses and the misuses of metaphor. It seems to me that there is nothing objectively the matter with these metaphorical uses of terms, when they are used by intellectually capable people who understand the difference between literal and metaphorical speech.
But this thread illustrates – and has, if I’m not mistaken, done so three times so far with different correspondents – that there are a lot of people who either are not capable of understanding the difference between the literal and the metaphorical, or find it in their argumentative interests to pretend not to understand.
The temptation for creationists is always to take the “fillossiffee” shortcut: why bother understanding evidence if you feel you can produce a cogent logical argument that demonstrates the wrongness of the things that make you sad, like having non-human ancestors? Surely, if pure reason puts the full stop to evolution, it’s no longer necessary to understand evidence or its implications at all, and that’s a lot of homework to skip. Very tempting.
But, as we know, there are a variety of difficulties to that. Reason unaided by facts isn’t actually very useful, and “logic” in the ordinary sense applies more sloppily to the ragged and irregular realities of actual things and events than it does to abstract entities. History, for example, doesn’t neatly boil down to a lot of simple “if A, then B; A, therefore, B.”
But this is why we have such a constant problem with the obsession with questions like whether something is a “code” and whether, therefore, it must have a “coder.” The notion is that once you’ve taken the ragged and complex thing in the real world and reduced it to a thing categorized, for discussion, by a four-letter word, it now has been rendered into a little unit – a nugget to be pushed around like A or B in a logical proposition. Never mind that this is almost always done in the most grotesque and ham-handed fashion – the appeal of it, to someone unarmed with the facts but very, very sure that it is not acceptable to have excessively hirsute ancestors, is very strong.
My own profession is often guilty of this, and for a funny reason having to do with our discipline, which is a kind of applied philosophy, made infallible by force and finality if not by actual correctness. In the law we have abstractions that are, to us, extremely real. It is sometimes a question of very great importance, for example, whether discussions between two parties and exchange of undertakings between them did, or did not, constitute a “contract.” For the most part, our system is “binary” on questions like this. If you have a contract, a whole range of consequences are more or less automatically applicable; if you do not, they are not. And so the word-shuffling becomes a kind of bloodsport on which fortunes and promises rest, and someone has got to pronounce the final answer: yes, it’s a contract, ergo, the one who failed to perform is in breach, ergo, the common law remedies for that breach are now available to the injured party. And so, in our own weird little domain, stuff like this “works.” If it mattered, for the sake of the law, whether DNA was a “code” or not a “code,” a whole slew of logical legal consequences would follow upon the answer, just as the creationists tend to think they do.
Ah, but reasoning “in the wild” is not the same thing as reasoning in law. Out here we are free to use language flexibly, and no assignment of something to one category or another is anything much more than a linguistic convenience, a shortcut to help us discuss things without atomizing them.
I think that in the same way that it may be fine to talk about your sexual behavior to a marriage counselor, but questionable to have the exact same conversation with your six-year-old child, it is sometimes the case that the use of terms therefore winds up, for practical reasons, needing to be more guarded when one is dealing with people who are liable, by incomprehension or by deceit, to try to render the literal metaphorical and the metaphorical literal. So, while I break these rules quite a lot, I find that I do try to limit the use of metaphors when talking to creationists, as it leads into these word-play back alleys. Unlike real-life back alleys, nobody gets stabbed, but Jeez, a lot of time gets wasted arguing about which linguistic construct to apply to something, rather than productively discussing the thing itself in all its complexity. In fact, the discussion might be avoided altogether, since it is usually the case that the creationist is ONLY interested in whether wordplay can be used, and has no actual interest in learning about the underlying subject matter.