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I'm of the opinion that "Don't Mix" should be seen more as a caution than a prohibition. A very useful caution, but a caution nonetheless. Hard sci-fi and pure fantasy work with very different wor...
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#3: Attribution notice added
Source: https://writers.stackexchange.com/a/41995 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#2: Initial revision
I'm of the opinion that "Don't Mix" should be seen more as a caution than a prohibition. A very useful caution, but a caution nonetheless. Hard sci-fi and pure fantasy work with very different world-views - one embraces technology and the other magic. Technology works within the framework of physical law, where what you want is entirely beside the point. Magic is (traditionally) based on a rejection of physical law, and the desires/will of the magician are what count. Technology is above all impersonal: predictable, although often obscure - Mother Nature is a coy lady whose secrets need effort and intelligence to uncover. Magic is (or was) fundamentally personal, full of irrationality and wonder. Attempting to mix the two runs into the strong temptation to mix the worst of both worlds, producing either technology which is indistinguishable from wish-fulfillment, or magic which is, well, boring. Over the last several decades, there has been a tendency for fantasy to be infected by technological influences. I personally blame Larry Niven's "The Magic Goes Away" for starting the movement, with his concept of magic being limited by a resource (mana) which can be used up and never replenished, very much like, say, oil reserves. While modern fantasy can produce good stuff, many writers seem to treat magic as just another skill, just another set of rules to be obeyed. There is an impersonal quality to the practice, and magic is not dark, irrational and dangerous. Magicians tend to be more like mechanics than wizards. In other words, the magic gets sucked out of magic. While the converse is also to some degree true of technology, the danger has always been there, since the author can simply describe almost any level of effect and invoke "advanced" concepts to justify it. As Arcanist Lupus pointed out, Arthur C. Clarke identified the problem at least 45 years ago, although to be fair, he was referring to real technology, rather than fictional, so the meaning is rather different. One way to look at the problem is to consider dramatic tension, which is the heart of most stories. Stories are about protagonists overcoming obstacles. If a knight battling a dragon can whip out a heavy machine gun and shoot it out of the sky, it takes a lot to make the story interesting. If a scientist trying to invent a serum to stop a plague can call up a demon to do the job, well, who cares? The trick in either case is one of tone, plot, and ingenuity. Crossovers can work. It's just that striking the balance gets harder, since crossovers need to address the rules of both schools simultaneously - or break them simultaneously, if you prefer. Either way, it's tricky to do well.