A friend recently asked in a open forum what the proper size of a sidequest in a novel should be. We all know sidequests: those are the moments in which the characters pause in the middle of their Main Quest to do Something Else. What the Something Else may be has a huge (but not the only) effect on its proper size. This got me thinking, and I would like to propose the following system of measurement:
The SI unit of measure for a sidequest is the bombadil. One bombadil is the amount of gratuitous sidequest necessary to make 50% of readers give up on their first readthrough. No sidequest should ever measure more than 0.05 bombadils, though famous authors may push it to 0.1 bombadil.
The amount of prose necessary to comprise a bombadil is variable, and depends on the general tediousness of the sidequest, the characters involved in the sidequest, how much they grow in the sidequest, and how it affects the progress of the Main Quest. Of course, it also depends on the raw length of the sidequest, but that is not as important as you might think. A truly gifted writer can make the sidequest just as important as the Main Quest.
So let’s look at the archetypal case. In The Fellowship Of The Ring, our heroes, Frodo, Sam, Merry, and Pippin, all get ensorcelled by an evil tree and freed by Tom Bombadil, a mysterious humanoid who takes them home to his just-as-strange wife for dinner. Bombadil later frees them from an evil barrow-wight and arms them with the treasure it was guarding. Breaking it down we have:
T = general Tediousness: Very High. The characters eat and sleep and listen to childish lyric poetry (10), slightly offset by them getting into two spots of serious and interesting trouble (-2): 8
S = characters exclusive to the Sidequest: 2 (lowest value for this variable is 1)
M = characters on the Main Quest: 4
g = growth of the characters because of the sidequest: Significant, but small. Frodo shows that he is capable of thinking, fighting and securing a temporary victory at need: 4
D = What it Diverts from: Walking to the nearest town. This is difficult, because on the one hand, diverting us from something that should be skipped right over adds tedium, but diverting us in the middle of something absolutely critical to the main plotline is worse, so this defies an easy, linear scale. Allow negative numbers on this one, with zero being the value at which the plot is progressing at a steady, unhurried, pace: Just walking along: -2
Finally, we introduce 4 as a constant, because all great equations have constants, and because a sidequest is only about a quarter as interesting as the main quest at best, a fact writers should ALWAYS remember, regardless of how clever they find themselves.
This gives us the following equation:
TSD²/4Mg = Qs (Sidequest value in bombadils)
And plugging in our values, we get:
8*2*2²/4*4*4 = 1 bombadil.
Initially, I had been going to factor in the sidequest’s ultimate importance to the story, whch would have made the score lower because one of the hobbit’s weapons, acquired on this sidequest, ultimately helps to destroy the Lord of the Nazgul. But the point is that we do not know that, and therefore it has no effect on whether or not the reader gets bored to death and puts the book down.
So, for some examples:
The Empire Strikes Back: Luke’s training sequence on Dagobah: Qs = 0.05 bombadil
T = 5 (cool Jedi powers and a fight with ghost-Vader, offset by boring platitudes on Planet Swamp).
S = 1
D = 0.5 (an increasingly-tense hunt for the Falcon, but Luke has to have a storyline of his own)
M = 1 (no, Artoo doesn’t count)
g = 6 (Luke becomes at least half a Jedi, but undisciplined.
The Eye Of The World: Perrin and Egwene’s sojourn with Elyas: Qs = 0.25 bombadils
T = 4 (It’s Jordan’s incredibly-detailed prose, but the whole thing with the wolves is awesome)
S = 1 (Elyas)
D = 1 (It’s about on pace with everything else)
M = 2 (Perrin and Egwene)
g = 8 (This sidequest basically starts Perrin’s character arc as a badass)
Moby Dick: The chapter on whales: Qs = 36 bombadils
T = 9. A lecture on whales. In the middle of a novel. Only not a 10 because whales are inherently cool.
S = 1
D = -2 (for being Moby Dick. They’re sailing.)
M = 1 (Ishmael)
g = 1 (he learns about whales)
It: That one scene near the end as the kids escape the recently-defeated It. Yeah. THAT one: Qs = 96 bombadils
T = (the exact number defies description, but the Ick factor makes me conservatively estimate it, on a scale of 1 to 10 at) 27.
S = 1
D = 5 (seriously, the book was OVER).
M = 7
g = 1 (in a really disgusting way)
Note that when main characters are uninvolved in the sidequest, you are approaching infinite bombadils, and should just stop.
So, there you have it, a completely objective and indisputable method for solving the worth of various sidequests. You’re welcome.