A simplification of Newton’s first law of motion, from our friends at Wikipedia, states: “An object continues to do whatever it happens to be doing unless a force is exerted upon it.” The same can be said of your novel. If your novel is moving nicely forward (which I hope it is), it will continue to do so unless something comes along to stop it or shove it off in another direction.
While there are plenty of things that can stop or re-direct your novel, the one I’m thinking of today is what I call gaps. These are gaps in your knowledge, plot or other novel elements that crop up as you’re writing, regardless of the amount of planning you’ve done. For example, you might be writing a scene that occurs in the vicinity of the Hoover dam and discover that, though you’ve read about the dam itself, you know nothing about the countryside or the roads. Gap! Or, let’s say you’re composing away and suddenly realize that if Uncle Slappy has the knife in the chapter your currently crafting, it had to show up in Aunt Kizzie’s handbag several chapters prior. Gap!
Whatever you do when you encounter a gap, you don’t want to let it stop your progress and you don’t want to let it re-direct you to the extent that you go off to work on something else. You can avoid that sad fate if you have a way to handle gaps already in hand when you start your project. I have a couple of ways I’m fond of; no doubt there are more.
One gap-handler I like is the in-line notation. This allows you to go with the flow when you hit a gap and still provides you an opportunity for patch-up later. As you hit a gap, you simply note the problem in brackets and keep right on going. For example: “Uncle Slappy pulled the magic knife from between the sofa cushions and [for Unc Slap to have knife now, knife must be in Ant Kiz purse way before now] brandished it like a sidekick in a B-grade swashbuckler.” This is not my idea; I picked it up from some writing book a long time ago and have used it with some success.
Another method, and my current favorite, is to keep a document called “Fixes.” I use a word processing file for this, but you could use a card file, or a legal pad, or the wall—whatever makes your cork float. I keep the document open while I’m writing and when I hit a gap make an entry there. For example: “For the scene ‘Uncle Slappy Cuts Up’ be sure the knife shows up in Aunt Kizzie’s handbag some scenes prior.” I like this method because I don’t have to go combing through the manuscript later to find the fixes.
That’s all there is to it. Happy gap-crossing!