Tom's Blog on Life

She Counted Forty-Seven

She counted forty-seven, and nobody believed her for fifty years.

In 1975, two researchers at the University of California, Santa Barbara decided to study something most people never thought to measure. They were not looking for dramatic arguments or obvious displays of power. They simply wanted to count interruptions. Don Zimmerman and Candace West observed 31 conversations between men and women, recording every moment one person began speaking before the other had finished. When the counting was over, they had documented 48 interruptions. Forty-seven of them came from men interrupting women. They published the study in 1975. The conversations carried on.

Nearly forty years later, linguist Kieran Snyder wondered whether those numbers would look different in another setting. She turned her attention to the technology industry, a workplace that often described itself as driven purely by ability and performance. She spent weeks sitting through meetings, tracking every interruption, who made it, who received it, and how often it happened. When she finished counting, the pattern looked remarkably familiar. Men interrupted women roughly three times more often than they interrupted other men. She published her findings in 2014. The meetings carried on.

By 2017, two researchers at Northwestern Pritzker School of Law decided to examine an entirely different room. If credentials could erase the pattern anywhere, surely it would be inside the Supreme Court of the United States. Tonja Jacobi and Dylan Schweers analyzed decades of oral argument transcripts, reading them line by line and counting interruptions just as earlier researchers had done.

Their findings showed that female Supreme Court justices were interrupted disproportionately often, both by male advocates arguing cases before the Court and by their male colleagues on the bench. These were lifetime-appointed justices serving on the highest court in the country. Even there, the interruptions continued.

The numbers tell only part of the story. An interruption lasts only a moment, but it quietly signals something to everyone listening. It suggests whose ideas deserve space and whose thoughts can be cut short. One interruption may mean very little.

Hundreds of them over the course of a career begin shaping reputations. They influence who is remembered as confident, who is seen as decisive, who is credited with leading the discussion, and who gradually disappears into the background. Those impressions do not end when the meeting is over. They find their way into performance reviews, influence promotion decisions, and shape who advances into leadership.

Since 2015, McKinsey and LeanIn have studied workplace advancement each year. Their research has consistently highlighted what they call the “broken rung” the first promotion from entry-level employee to manager, where women have historically been less likely than men to move forward. Although that gap has narrowed over time, recent reports revealed something else. Women increasingly said they were receiving less support for advancement than before, and for the first time, fewer women reported wanting the next promotion compared with men. The issue was not a lack of ability. It was the experience of climbing a ladder that too often seemed to push back.

Forty-seven out of forty-eight. That number was written down in 1975, yet similar patterns have appeared in technology companies, courtrooms, and workplaces decades later. Different rooms. Different professions. Different generations. The numbers kept pointing in the same direction. Most people never intended to create the pattern. It simply continued because few people noticed it closely enough to question it. We watch who speaks the most. We notice who appears confident. We remember who finishes their thoughts. Then we call the outcome merit.

The research, however, ends with something surprisingly simple. When someone in the room says, “Let her finish,” the interruption ends. She finishes her thought. Everyone hears what she intended to say. Her contribution becomes part of the discussion instead of disappearing halfway through a sentence. It is acknowledged. It is remembered. It is credited. Three simple words can change the direction of an entire conversation. The solution was never that women needed different voices. It was that the room needed to let those voices be heard.