“Focus, focus, focus.” It’s one of the most common pieces of advice given to startup founders. And for good reason: the companies that win are usually the ones that concentrate resources, double down on a market, and execute faster than the competition.

But if you’ve ever been a founder, you know this is easier said than done. When you have a technology that could apply to three different industries, it feels reckless to shut down possibilities too early. What if you pick the wrong market? What if the real opportunity is behind the door you just closed?

The truth is, focus is critical, but timing is everything. And here’s where research can give us sharper insight.

What Behavioral Research Tells Us About Options

Dan Ariely, a behavioral economist at MIT, ran an experiment in the early 2000s that illustrates a problem every founder faces. Participants played a simple computer game with three doors. Clicking on a door earned them money, but if a door wasn’t clicked for a while, it disappeared.

Rationally, the best strategy was to pick the highest-paying door and stick with it. But people didn’t do that. Instead, they wasted clicks jumping between doors to keep them all alive, even when it hurt their total earnings.

The finding: we have a powerful psychological urge to keep options open, even at a cost. Closing a door feels like a loss, and losses feel worse than gains.

From Irrational Bias to Explore–Exploit

Since Ariely’s work, the field has advanced considerably. Research in psychology, economics, and even computer science has clarified that the real challenge isn’t simply “don’t keep too many doors open.” The deeper framework is the explore–exploit tradeoff:

  • Exploration: testing multiple options when uncertainty is high, to learn where the opportunity might lie.
  • Exploitation: focusing resources on the best-performing option once you have enough evidence.

This model has been studied in decision science, reinforcement learning, and economics. It recognizes that keeping options open can be rational in the early stages, but only if you know when to shift gears. The trap is staying in exploration too long and paying heavy costs to keep weak options alive.

Why This Matters for Startups

For founders, this means the question isn’t just “Should I focus?” It’s “When should I explore, and when should I focus?”

  • Early on, some exploration is essential. Testing multiple markets or use cases gives you the learning you need to discover product–market fit.
  • But exploration has real costs: split engineering focus, diluted messaging, distracted sales cycles. At some point, those costs outweigh the benefits.
  • The founders who succeed are those who shift deliberately from broad exploration to focused execution at the right time.

What’s Next

This post introduces the problem: our irrational drive to keep doors open. In the next posts, we’ll look at how:

  1. The Lean Startup approach offers a structured way to explore without spinning your wheels.
  2. Practical tips on how to focus by identifying the one thing that matters the most.
  3. The transition from exploring to focusing is one of the hardest—and most critical—decisions a founder will face.

At Transition to Scale, we help founders navigate these tradeoffs with clarity — bringing discipline to the messy process of finding and scaling markets. Because success isn’t just about focus; it’s about knowing when to focus.

[footnotes]

1. Ariely, D., & Shin, J. (2005).
 Keeping Doors Open: The Effect of Unavailability on Incentives to Keep Options Viable.
 This is the core experimental paper behind the “door-game” in Predictably Irrational, in which participants irrationally hurt their performance by constantly clicking multiple doors to keep options alive, even when that reduced earnings.

2. Wikipedia: “Exploration–exploitation dilemma.”
 A concise, multidisciplinary overview of the explore–exploit tradeoff concept—its definition, origins, and relevance across fields like decision science, computer science, and economics. 

3. Informs Management Science (2021).
 Understanding Managers’ Trade-Offs Between Exploration and Exploitation.
 A scholarly paper that examines how managers and organizations balance experimentation (exploration) with structured execution (exploitation) in various business decisions. Especially relevant for founders applying the concept in practical resource allocation.

4. Wikipedia: “Loss aversion.”
 A foundational explanation of the psychological bias that losses loom larger than gains—a key mechanism underlying why individuals resist closing options, even when it’s rational to do so.