When to use it
Use when conventional approaches keep producing similar ideas, when the team is stuck in its own industry bubble, or when you want a genuinely differentiated solution. A logistics founder thinks about logistics solutions. A health-tech CEO thinks about health-tech solutions. The most valuable ideas often come from a completely different domain that solved a structurally similar problem years ago.
Core tool in The Spark for breaking out of familiar thinking.
How it works in The Studio
Here's how a session works with WAiDE:
Sample output
Here's what a Mash Up session board looks like:
What you get
A set of collision cards from unexpected domains, each revealing a transferable mechanism. The session ends with remixed ideas adapted to your challenge, each tagged back to its source analogy, plus a concrete first experiment to run.
Foundation
Rooted in IDEO's Mash Up methodology and cross-pollination practice. Draws on the same intellectual territory as classical analogical reasoning (Aristotle), biomimicry, and DARPA's structured analogy programs. Used by P&G's Connect + Develop program to source external innovations.
Why it works
Mash Up is one of the oldest documented tools of human reasoning — Aristotle named it, and cognitive scientists have since shown it to be a core mechanism of creative problem-solving. The brain doesn't generate ideas from nothing; it constructs new solutions by mapping structural relationships from existing knowledge domains onto new problems. The question is whether that mapping happens unconsciously within your familiar domain, or deliberately from distant ones.
Distance is the operative variable. Research by cognitive psychologist Dedre Gentner shows that surface-level analogies (borrowing from a competitor in the same industry) produce incremental improvements. Deep structural analogies — borrowing from domains that share the underlying relationship pattern but nothing else on the surface — produce genuinely novel solutions. This is why IDEO designers study emergency rooms when designing consumer electronics, and why engineers study bird bones when building aircraft fuselages.
Procter and Gamble's Connect + Develop program made this principle industrial. Instead of hiring more R&D staff, they systematically searched for innovations from other industries that could be adapted. Within years, more than 50% of P&G's product initiatives involved an external innovation partner — not because their internal capabilities were weak, but because relevant solutions from distant domains are almost always both cheaper and more original than building from scratch.
The mechanism: The cross-domain collisions that feel most productive are the ones where the structural logic transfers but the surface looks completely different. The more a potential analogy resembles your existing world, the less useful it is. The most valuable ideas come from domains you'd never normally visit — which is exactly why a structured prompt to look there is required.
Frequently asked questions
How do you know which domains to borrow from?
The most productive source domains share the same underlying relationship pattern as your problem, even if the surface looks nothing like it. If your problem is about coordinating many independent parties toward a shared outcome, look at how air traffic control, jazz bands, or immune systems do this. WAiDE selects analogies based on structural match to your challenge — not random distance. The goal is productive collision, not surrealism.
What if none of the analogies feel relevant to my industry?
That's often the point. Mash Up is deliberately designed to escape your industry's existing conventions. Every sector has a shared set of assumptions about how things work — and those assumptions are invisible to insiders. Borrowing from a completely unrelated domain is how you see those assumptions from the outside. If nothing feels immediately applicable, look for the mechanism underneath the analogy, not the surface form.
Is this the same as benchmarking competitors?
No — benchmarking looks at what competitors are already doing, which by definition can only produce improvements within the existing category logic. Mash Up looks at how completely different domains have solved structurally similar problems, which can produce ideas that are invisible to anyone benchmarking within the category. The value is in the distance: the further the source domain, the harder it is for competitors to see the same connection.
How do I move from an interesting analogy to an actual idea?
The transition happens through "what would this look like in my context?" — taking the mechanism from the source domain and asking how it would operate in yours. A hospital's triage system doesn't directly become a product feature, but the underlying logic (quick assessment, priority routing, dedicated fast-track for high-urgency cases) might translate directly into customer service design or product onboarding. WAiDE guides this translation step explicitly in the session.