I have a day job in software development where I’ve worked with large corporations. Thanks to that job, I’ve had plenty of exposure to corporate efficiency buzzwords and processes, from lean six sigma black belts to leveraging synergies.
While the eye-rolls induced by these terms are often justified, they usually start with a useful kernel of truth before metastasizing into something a VP drones on about in the all-hands meeting as everyone tries not to cringe.
This brainstorming method is based on the five whys, a corporate-speak process for digging a few levels deep to find the real root of a problem. I like it for brainstorming fiction ideas is because it is fast and easy and generates some unexpected connections.
Five Finger Brainstorming
Start with the first premise that pops into your head. It can be almost anything. It doesn’t have to be particularly interesting or story-worthy. However, don’t be afraid to start with something big like a hostage negotiation or first contact with aliens.
Example:
A man kills his neighbor…
Next, ask yourself why that first event happened, or what it implies. Repeat this until you’re at least five levels deep. You can count them off on the fingers of one hand.
Don’t think hard. Just write down the first thing that pops into your head each time. This technique works best if you let your subconscious take the wheel.
A man kills his neighbor…
because the neighbor knows his secret…
his secret is that he is hiding an alien in his basement…
because he is in love with it…
because he is an alien too.
Next, look at this sentence or paragraph as though a breathless child had just run up and told you this story. What questions would you have? I usually have a couple. These questions are natural jumping-off points for expanding the idea further.
- Are they the same species of alien?
- Why does one need to be hidden? Does one pass for human while the other doesn’t?
- What happens after the murder?
Bonus: Story Trees
You can expand on this with a different style of brainstorming—one that is slower and more methodical. Try it with an idea that feels like it has potential, where you weren’t satisfied with your initial blurbs.
Look at each answer as a branching point in a tree. The original idea is the root. Instead of expanding that idea once, expand it in five different ways. Then go down the chain for each of those branches.

(Why yes, my MSPaint skills are incredible. Thanks for noticing.)
Be aware that filling out all the branches results in exponential blurbs. If you don’t want to go that far, just fill in a few branches that pique your interest. Remember, inspiration often strikes when you’re straining to come up with one or two more ideas. On the other hand, you’re under no obligation to stop at five if you want to keep going.
Two Techniques that Work Great Together
The five-finger technique helps dig deeper into the reasons and consequences of an initial idea or event. The story tree forces exploration of alternatives, which can sometimes get you past easy, tropey explanations and into more interesting territory.
In brainstorming, quantity leads to quality. With these techniques you can generate a lot of ideas quickly, so don’t be precious about them. They’re meant to be quick and disposable. So start counting, and come up with something new!