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A Little Gravity in My Sci-Fi

6/29/2015

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Gravity is a constant in spacefaring science fiction. From low-G worlds to floating Klingon blood, it’s usually taken for granted. But how often do we really consider its effects on the imaginary, interstellar civilizations authors create?

In real life, we’re accustomed to astronauts floating in zero-G, probes receiving a gravity assist from planets as they journey to their destination, and the effects of weightlessness on human physiology. Science fiction writers, like myself, portray these phenomena in our stories to further immerse readers in the narrative. They have become typical set dressing, much like castles and knights are clichés of epic fantasy. There’s nothing wrong with that, but what about the real, long-term effects of gravity?

This invisible force has had immeasurable effects on not only our planet and the surrounding universe, but our very species. Everything from bone structure, the colors we can see, our shape—and possibly, even how we age. Could gravity be the deciding factor in our future among the stars?

We already have some sort of destiny beyond the Earth. Our space probes, such as Voyager I & II, are proof of that, for they will likely outlast our species by billions of years. But gravity will play a larger role in that future, other than being a slight obstacle in escaping Earth orbit. It will determine where we can live. Where we can survive.

But science fiction has touched on that. Here are some areas it doesn’t typically address:

Sentient intelligence: Does gravity have a long-term, evolutionary effect on our brains? Does it inhibit or encourage the complex arrangement of neurons and chemicals that grant us the processing power to think? Or to feel? If humans had evolved on a planet with a different gravity—say, three times that of Earth—would we think differently? Or can intelligence, as we know it, even evolve under different conditions? I’m sure it can, but until we know for certain, it does pose a fascinating question: could we interact with, or even understand, a species that evolved in a vastly different gravity? I’m talking about aliens that evolved under, say, six times our normal gravity. How would that change possible communication, beyond the physiological constraints?

Childbirth: Since no child has been carried to term and birthed in a zero gravity environment (or any other alternate gravity, for that matter), what effects will it have when that happens? I’m guessing less bones mass, perhaps weaker muscles. Maybe not in a crippling way, but I doubt that such an environment would have no effect on the fetus. Will these children be a link between our past and our future? Birthed by a lifeform from a certain gravity, with its genetic makeup, but influenced by a gravity at odds with how those very genes evolved? Would there be birth defects if the child were born on a high-G world, with such powerful forces tugging on every second of its development in the fetus? Over time, could another species evolve from us, one that could survive alternate gravities? This isn’t referring to just zero-G, I’m also including Mars’s gravity. Though about one third of Earth’s, would its gravity reshape future colonists over several generations?

Sensory limits: Our own gravity, and our sun, influence our eyesight. Right now, we can only see a small fraction of the electromagnetic spectrum. We can only hear within a certain aural range. Would this be the same for a human born and reared on another planet? A world with different gravity than Earth’s, and one with a hotter, brighter star? Or even a dimmer, colder star? If a colony survived on such a world for, say, a thousand years, how different would their offspring be from those born on Earth? I’d imagine there’d be some differences. And I mean beyond the assumed ones (generations birthed on a low-G world would be slighter, etc.). I’m referring to how they’d interact with their environment. Would their eyes discern different colors than ours, for example? What about their other senses?

Technology: This is something, off the top of my head, that I haven’t seen in science fiction—a disparity in technologies due to different native gravities. And I don’t mean that one civilization has a super-duper ray gun and one doesn’t. I mean, could we even utilize another species’ tech if they developed it for use in another gravity? Imagine trying to wield a gun fabricated by a high-G species. Or piloting a starship, where its process for creating artificial gravity during flight aggravates or even kills another species that wasn’t that vessel’s intended occupants. I think more than just physiology and philosophy would be at work here, in making an object alien to human understanding. I’d imagine that everything would be different. Gravity could have a hand in that.

Economics: Gravity, as we currently understand it, is a universal, irrevocable force. One that we manipulate, and even escape at times, but we still cannot control it. In most interstellar science fiction, FTL travel is common, and artificial gravity aboard starships and space stations is the norm. But gravitational forces would still make such endeavors expensive. What if there were extra tariffs placed on goods from a low-G world, because they’re likelier to break? What if there were taxes incurred whenever one traveled to a high-G planet, due to the extra fuel and danger that such a landing/takeoff would involve? In very advanced civilizations, gravity could become a commodity, where the rich reside in comfortable living spaces attuned to their native gravity, while the poor dwell in gravity that is harmful to them. Think of the health costs in an intergalactic society. Is it really worth it to colonize a high gravity world? Would space travelers have to pay more for medical services, because their extra needs (bone reinforcement, reversing muscular atrophy, accelerated pulmonary conditions) puts a strain on society? 


If a science fiction writer has already touched on these issues, then I still have a lot of reading to do. Though I tried to inject the side-effects of gravity into my novel INHERIT THE STARS, I didn’t touch on all of these issues. The story didn’t call for them, and that’s true for many other authors. It’s not always a sign of lazy writing—my novel isn’t Hard SF, after all. But I would like to see more of these concerns expressed in science fiction. I have some ideas gestating on this, since I’m fascinated by gravity’s effects on us. Through my fiction, I intend to explore more of those effects.

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Review Etiquette

6/5/2015

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Reviewing another author’s work and posting it to Goodreads or Amazon can be tricky. If you leave an honest but low-star review, you risk making an enemy (the writer in question). If you leave a positive, high-star review, you might come off as a sycophant. But you shouldn’t have to worry about posting your honest opinion, either. So what’s the best review etiquette?

Mine is simple: I only post reviews for titles I really like.

Books that I find mediocre, boring, or even terrible, I merely leave an average to low-star rating without writing a review. This way, I remain honest, but provide a boost for authors whose work impressed me. Those writers who didn’t, well, there is always someone willing to post negative comments. There’s no shortage of that on the web, and I’d rather not contribute. Plus, if I found the book that bad, I don’t waste time writing comments—I’ve already paid money for it, and spent time reading it, so why use more resources on something I didn’t enjoy?

When I do write review comments, I have three rules: don’t give away spoilers, say positive things about the book, and describe particular aspects of the work that stuck out to me.

Why no spoilers? Because I loathe them. If I’m writing a review at all, that means I liked the book. So why would I want to rob prospective readers—readers who might be influenced by my review to buy said book—of the story’s secrets, or its ending, when I was able to enjoy these things myself? So I hint at what may come in the story, but that’s it. I try to write my own blurb for the book, actually. That’s more or less what most web reviews are—and blurbs don’t have spoilers.

Positive comments highlight the reasons I’m writing a review in the first place. Remember, I only do this for books I rate 4 or 5 stars. So if there are a few issues I had with a novel, they aren’t worth mentioning. This is a title that left me satisfied, was though-provoking, and left me emotionally moved. So I’m not going to bother with nits.

And finally, I always point out names, situations, or details from the book—information I can only get from actually reading it, instead of copying other reviews. This way the author will know I really did read the work from beginning to end. As an author myself, it’s always gratifying when a reader recalls a character name, a scene, or a snippet of dialogue from my own work. It shows that they read it, and enjoyed it enough to remember details afterward. I do this as a compliment to the writer.

I don’t go into literary analysis or in-depth critiques. I leave that to the professional critics, the ones who write reviews for a living. See, I don’t write reviews for a living. I write fiction. Leave the analysis to the experts and to those who think they are experts. Plus most people who is scan over a book’s reviews aren’t looking for a scholarly deconstruction that touches on theme or symbolism—they want to know if the title is worth their time, effort, and money. There are always plenty of other books out there to read, after all.

A final word: if I bothered to leave a 4 or 5 star rating, and I wrote review comments, that means your book captured my imagination. It held my attention from beginning to end. It’s a title I’d recommend to fellow readers and authors. It is a book I’m proud to display on the shelf next to my other favorite books. And I keep what I consider great books for life (I still have titles I read when I was ten years old, and I’m near forty). So that means I’ll be passing your book on to my children, the next generation. That may be the best endorsement of all.

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