Or cars and airbags being tested on male dummies for the longest time, resulting in women (who are shorter and weigh less) getting seriously injured/killed at higher rates in accidents: https://www.bloomberg.com/view/articles/2012-08-22/why-carma...

> In some cases, according to tests with female mannequins, small women were almost three times as likely as their average male counterparts to be seriously injured or killed. A study of actual crashes by the University of Virginia’s Center for Applied Biomechanics found that women wearing seatbelts were 47 percent more likely to be seriously injured than males in similar accidents.

There was a computer system featured once on Beyond 2000 that could recognize and mimic your facial expression.

But it was developed by Japanese and tested only on Japanese people. The host had to wear a black wig to make it work.

The Xbox camera also had trouble tracking African Americans.