While watching tennis,
Mary remarked that she believed Serena Williams would beat Roger Federer if they ever played. Mike explained the biological differences between men and women to
Mary. He also explained normal distributions to
Mary, and how even though Serena Williams could beat
99.9% of the men in the world in tennis, that means there are thousands of men you have never heard of that could beat her.
Mary did not appreciate the mansplaining and would have preferred to continue living in the false reality where women are just as good as men in sports.