Competitive Scrabble constitutes a natural experiment for testing the feminist worldview. According to feminist dogma, males and females are identical in their aptitudes and interests. If men dominate certain data-based, abstract fields like engineering, physics and math, that imbalance must, by definition, be the result of sexism—whether a patriarchal culture that discourages girls from math or implicit bias in the hiring process.

But there are no cultural expectations that discourage females from memorizing dictionaries—a typical strategy of competitive Scrabble players, often in a foreign language that the player doesn’t speak. Girls are as free as boys to lap up vocabulary. Nor are there misogynist gatekeepers to keep females out of Scrabble play; the game, usually first learned at home, is open to all. According to Hasbro , 83% of recreational Scrabble players 25 to 54 are female.

Championship Scrabble, however, rewards typically male obsessions: strategy, math, a passion for competition, and a drive to memorize facts. Mr. Richards’s mother told the Guardian in 2015 that he “related everything to numbers” when he was growing up. Feminists will need to employ circular logic to conjure forth a discriminatory barrier in Scrabble: Males’ excellence at a certain activity itself keeps females out. But that leaves unanswered the question of how males came to excel at Scrabble—or any other abstract, competitive activity—in the first place.