What to do when your technology guesses are disproved?

Technology in Astronomicon: The BeginningTechnology is always a pain for writers of hard science fiction. We need it, a lot of it and often it is key to the storyline. Like most hard sci-fi writers I put a lot of time and effort into researching science and technology to make as accurate a guess at the future as I can. Sometimes we get it right but, often, we get it wrong.

Time is our enemy. The more time passes the more science and technology advance, leaving our best, educated guesses in danger of being proved wrong.

I wrote Astronomicon: The Beginning something like 20 years ago and much of the technology I included has held up well. Some things, however, have not. Now, this isn’t usually much of a problem because the vast majority of readers take the age of the book into account. The same goes for movies; who stops watching Blade Runner because it completely missed mobile phones or in 2017 (Blade Runner is set just two years from now) we simply don’t have flying cars?

My situation is a little different and becoming increasingly awkward. I’m in the process (and it’s a LONG process) of rewriting the first novel in the Astronomicon series in a serious attempt to bring it up to my current level of writing an correct the flaws in my technology predictions. Being the first in the series, I can’t just get rid of it or write it off as not worth the effort. It’s how many readers get into my universe and simply must be representative of the other novels.

The Elysian, the main spacecraft in the story, will undergo a complete design change to bring it into sync with the much improved and more realistic version currently used in Behemoth. That will have a significant impact on the book, mostly in terms of descriptions and character navigation. Nothing fatal there. Some of the minor characters will change a little and gain some depth. Again, nothing fatal. Things get awkward with the technology used to communicate with Earth. When I planned the novel over two decades ago, I went for Quantum Entanglement as the medium but now we know that just would not work.

The problem is, there just isn’t any viable way to communicate between stars without being limited by that pesky speed of light restriction. That makes a big chunk of the plot completely impossible. So, when I rewrite the book, do I keep in a chain of events which cannot be justified, maybe by making up some fantasy technology (which is hardly hard sci-fi) or do I rip out the relevant chunks of the story and then attempt to come up with some other idea as a reason for the characters wanting to do what they do? As I write this, neither option seems like a good solution.