How do you take the insights you’ve gathered from an interview, and translate them into workable, testable design decisions? I’m going to start really high-level here, and then drill down to a few tactics.

Synthesis is a form of sense-making about the world. It forms the core of the design process. Yet it is something you and I do every single day, regardless of our career paths or design know-how.

How do you settle on a particular solution?

Design thinking appears to be risky from the outside. But it also does a bad job of expressing itself to most people.

There’s a comic strip that I frequently cite, where two scientists are picking apart a complicated process, and one of the steps in the middle reads “then a miracle occurs.”

Comic in which two scentists stand in front of a blackboard on which an equation is written. Of the step in the middle, one says to the other 'I think you should be more explicit here in step two.'

This is how I suspect design feels to a lot of non-designers.

The reality is considerably more practical. Designers synthesize research using abductive thinking.

You’ve probably heard of deductive thinking before. That’s the one where you have a pretty simple logic puzzle: “if A, then B; if B, then C; therefore, if A, then B, then C”.

And you’ve probably heard of inductive thinking before. That’s the one where you observe a condition and make an inference: “Every time A happens, B occurs. Therefore, the next time I do A, B will occur.” You flip a coin 99 times. Heads appears 99 times. Will it appear the 100th time?

Abductive thinking requires making an informed guess, based on what you already know about the world. “If A, then B” is not enough. According to Jon Kolko, in this post:

I’ve done something like A before, but the circumstances weren’t exactly the same.

I’ve seen something like B before, but the circumstances weren’t exactly the same.

I’m able to [conclude] that C is the reason B is occurring.

C is not part of the original set of information. C is a guess based on a combination of observed phenomena, prior data, and prior experience. And you might be wrong, even if the underlying cause is true.

The insight does not come immediately. Kolko cites Philip Johnson-Laird’s four-step design process:

  1. The current problem solving strategy fails to yield a solution, given the existing constraints.
  2. There is a tacit consideration of the new constraints in the strategy.
  3. The constraints are relaxed (or changed) in a new way, thus broadening the problem space and allowing for further consideration.
  4. Many changes in constraints lead nowhere, but, with perseverance, a change may be made that leads to a solution.

Note how constraint-focused this is. You have a certain set of conditions, and you have to work within them. What happens if the conditions change? What does that do to your ability to communicate with prospective customers? This is a form of systems thinking as well: change one parameter, and observe the shift in dynamics.

I Am Going to Talk About A/B Testing Now

The reason this process is important is it helps you keep an open mind. Sure, you’ve always had this primary headline. But what if you couldn’t have it? What if you had to change it? What if you had to change it to something radically different? What if your customers turned out to be radically different than you initially thought?

These are all new constraints that you bring to a problem – which allows you to gather new insights. Applied to your research, here are the questions I ask:

  • Who was the participant?
  • What was their motivation to purchase?
  • What has their lifecycle with (the product/my business) looked like?
  • How do they respond to our offering as it looks right now?
  • Does this represent what I think would be a “typical” case, or would they represent an outlier?
  • How common are outliers, and what are their business ramifications for us?
  • Was there anything about the interview that surprised me? Why?
  • If I were creating an entirely new product today, what would it look like?
  • In what ways would it be different than what I’m currently offering?

It’s very okay if the answers to these questions vary from participant to participant. Why? You’re trying to get a broad range of perspectives. Maybe you do get an outlier who hoards your product and won’t stop talking about the artistic trajectory of your creative director.

One goal of this is to clear your head of all prior thinking of how you sold your product. Perhaps your branding worked five years ago – and it doesn’t now. Perhaps it works for some people, but not for all.

But these questions also help you figure out what to do about it. That’s where prior experience (and abductive thinking!) comes in. From the sets of answers you just wrote down for each interview, write up at least five significant design constraints that you think these customers would impose on the business if they were given free rein. Like one-handed food for people who refuse to let go of their smartphones. Or having SIM cards delivered by mail to women who live private lives in Saudi Arabia. Good synthesis makes you think “oh no, our customers think this way. What do we do about it?”

Finally, try to sketch out a design that fulfills those constraints – while still representing your business’s needs and broader goals. Does it fit with your existing marketing? Is it a direction you want to go right now? Or should you roll it out alongside the existing design? This is why testing is so important – it helps you understand the overall economic impact of a decision, so you can see what it does to your outliers, your addressable market, and your existing demographics.

The more experience you have with others’ marketing pages, the better – which is why it frequently helps to hire design experts. Even so, anyone can do this. I don’t think I have any sort of clairvoyant magic that allows me to abduct better than anybody else. Most of the time, I just use common sense. Design insights often look blindingly obvious.

But if you do all this right, maybe you’ll end up with a website that sells more stuff to happier customers.

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