When You Adopt Horizon Scanning, the Quality Of Your Strategy Improves
A Basic Guide to Horizon Scanning for Organizations
Most organizations plan for a future that looks like the past. Horizon scanning is how you spot what's actually coming, the changes emerging at the edges of your awareness that could reshape your world.
Formally defined, horizon scanning is the effort to “continuously and objectively explore, monitor and assess current developments and their potential for the future” (Rowe, Wright, and Derbyshire, 2017). But the idea is older and simpler than that.
Imagine you are the captain of a trade vessel in an earlier era. Your livelihood depends on your ability to set sail. You need to know whether stormy weather, strange creatures, or ships from enemy lands may be lurking. Your tools are simple: your eyes and your best judgment. But if you only stand and look in one direction, you might miss an enemy ship coming from the other. Your best bet is to scan—to look widely in every direction to grasp all of the dangers and threats emerging from the water.
That is the essential metaphor of horizon scanning.
Scanning the horizon widely can help you anticipate coming threats
Why Horizon Scanning Matters Now
Horizon scanning emerged in the 1960s ascompanies faced growing complexity—international expansion, advancing technologies, new management challenges. The technique is even more vital today. An uncertain future, accelerating change, and complex interconnected systems mean that organizations can no longer assume the external environment will remain stable or predictable.
Horizon scanning does three critical things:
It asks you to pay conscious attention to change and reminds you that the external environment is dynamic and can produce surprises.
It insists that you focus on issues beyond the inevitably narrow scope of your mission, reducing the chances that developments will catch you off guard.
It anchors your decisions and strategies in a genuine future focus by asking the what-ifs that matter.
The Concept of Weak Signals In Horizon Scanning
The goal of horizon scanning is to anticipate relevant issues and opportunities before they have fully developed. These potential issues are often called “weak signals.”
Igor Ansoff, a mathematician and military theorist and, later, a strategy professor, introduced “weak signals” into strategic thinking.
He urged managers to seek early evidence of a changing environment—those signals that are not yet fully evolved or “strong” enough to be heard clearly. His process was straightforward: identify and collect signals of change, evaluate their relevance, and incorporate them into the firm's strategic planning.
A weak signal is considered to be an event or a phenomenon that has occurred but is not typical or mainstream. It has not reached the stage of being an “issue” or a problem or even a recognizable trend. People use news media, social media, and specialized sources for information to unearth weak signals. Horizon scanning usually involves recording these signals in a database and then evaluating them to understand what they mean.
This evaluation, rather than the collection of information in itself, is the heart of the horizon scanning activity. How do you know if what you have found is meaningful? What if it is something you have never heard of but which is known to others? Can one weak signal by itself matter?
The fact is that you can’t answer all of those questions at the time of collection. Accepting—even embracing—this ambiguity is essential in horizon scanning work. Swiss anthropologist Pierre Rossel described weak signals as "perceptions of possible changes that are essentially candidates (or hypotheses) with a socially relevant and resonant knowledge building process." In other words, a signal is evidence that seems meaningful to you in the context of your organization. You think it should play a part in building a picture or story of a potential future environment.
Additionally, the very act of seeking to identify what is currently on the distant horizon is a fruitful exercise. By conducting it, you are putting yourself in the advantageous position of potentially seeing, preparing, and acting on changes in the environment in a proactive way.
An Example: How Weak Signals Predicted Major Change
In a 2020 article on horizon scanning in the journal Foresight, Yuichi Washida and Akhihisa Yahata explored how how horizon scanning informs future-focused scenarios predictive value. They offered an instructive example of weak signals in action.
In 2014, one of the authors identified four unrelated weak signals related to disease spread:
The danger of infected mosquitos
A syphilis epidemic
An item about prostitution and drug use in the European Union
The spread of tuberculosis in run-down areas in Japan
Separately, he collected four items on the topic of China.
Chinese military activity close to Vietnam
Economic competition between Japan, the US, and China
Japanese corporations withdrawing from China
Chinese was being used increasingly in educational contexts
Looking at each cluster together, he drew two conclusions. The first set suggested the potential for a dangerous epidemic. The second suggested that China would soon test its capacity to be a global leader. These were "non-linear" changes—they could not be extrapolated from past trends. The only way to find them was through disciplined and imaginative analysis of weak signals in relationship to each other.
In their 2020 article, the authors pointed to the COVID-19 pandemic and China's role in it as expressions of these signals. By seeing them in 2014, they had time to prepare.
How to Set up a Horizon Scanning System
Horizon scanning is best as a systematic activity. Through repetition and continuous looking, you can begin to get a sense of change over time. With that said, if this is a new practice in your organization, you may want to dip into the activity with a specific project or question.
Experienced futurists have identified key decisions to be made?
How broadly or narrowly you want to define your scope. A national security organization already monitors the geopolitical environment. But what might they discover by looking at consumer behavior in local markets? These could signal early signs of resource constraints that eventually matter to them. A global clothing retailer already follows market trends and supply chains. But what about scanning global geopolitics for emerging trade disputes that could disrupt their operations?
Your time horizon. Are you looking for what emerges in 3 years or 30? This shapes what signals matter.
How you will analyze what you find. Will it be a database? Regular team discussions? What role will genAI automation play in your analysis?
How analysis feeds into strategy. Scanning only matters if it actually changes how you plan and decide.
Once you've answered these questions, you can choose what to collect, and crucially, recognize that looking outside your area of expertise is vital.
Four Essential Practices
Rossel suggests four more important practices around the collection and analysis of signals.
(1) Don't consider signals in isolation. One sign or event is unlikely to be the sole cause of complex change. Analyze signals in connection with others and in the context of a hypothesis about the future environment. Clusters of weak signals tell you things individual signals cannot.
(2) Probe your own bias. You are always a biased observer. Does a signal you've chosen reflect or confirm your worldview? How does your point of view color what you've identified? This self-awareness is essential to avoiding confirmation bias at scale.
(3) Make it collaborative. Horizon scanning should never be a solo activity. Other stakeholders will see signals you miss and interpret them differently. The more diverse the group performing horizon scanning, the better your chance of spotting what matters.
(4) Follow the signal forward. When your group decides to include a particular signal in your expectations of the future environment, keep watching it. Appraise it in light of what happens later. This rigor sharpens your understanding of how change actually occurs and when it's relevant to you.
The Culture Problem: Why Information Abundance Changes the Scanning Environment
Directions and explanations of horizon scanning often focus heavily on the collection of information and weak signals. This makes sense historically—horizon scanning evolved in an information-poor environment. People had to go to public libraries and government offices to gather data. A conference or meeting with an expert offered rare insight into an otherwise closed world.
Today is radically different. We are drowning not only in information but in intelligently curated collections of emerging innovations, ideas, and practices from countless channels. This abundance makes the entire concept of a "weak" signal less important. It places far more pressure on the people collecting and evaluating information to do so openly and thoughtfully.
Fostering an organizational culture that can take in information that counters its dominant view of the future—and remain open to creative analysis—is now critical. Without a strong, open culture around information, it doesn't matter how much you collect. Your organization simply won't be able to make good use of it.