Conformity is less about agreement and more about avoiding the discomfort of dissent and social rejection.

Shared beliefs persist through groupthink, repetition, and lack of open challenge.

Strong ideas are those that survive testing, not those most widely accepted.

In many industries, beliefs stick not because they’re constantly tested, but because repetition makes them feel true. Through social proof and conformity, repeated claims from credible sources can slowly turn uncertainty into “common sense.”

The coffee industry is a clear example. For decades, Arabica, the most widely cultivated and consumed species of coffee plant, was treated as the standard for quality, while Robusta, known for its high caffeine content, hardy nature, and bold, earthy flavor, was seen as a lower-grade bean mostly used in instant coffee and cheap blends. Over time, that split became embedded in grading systems and specialty coffee culture, shaping what people learned to recognize as “good” coffee. In reality, what looks like objective quality is often just shared belief, reinforced over time by culture, economics, and repetition.

To better understand how these assumptions form—and what it takes to challenge them in practice—I spoke with Eirik Holth and Gabriel Shohet, co-founders and co-CEOs of Black Sheep Coffee. As operators who have built and scaled a coffee business by challenging long-standing industry assumptions, they offer an inside perspective on how consensus is formed—and how it can be questioned from within.

Why Disagreement Feels Threatening

The psychology of conformity has been studied for decades, and the findings are consistent: people often align with group consensus even when they know it is wrong, driven less by confusion and more by the social cost of standing apart.

Research shows that social exclusion activates neural systems involved in threat, salience, and affective distress........

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