The article explores why women have made less progress in tech than in other fields. It uses the stories of real women to illustrate the pervasive pattern of being treated in ways that lower their experience of "belonging and expertise." It also emphasizes the even greater challenges faced by women of color. It explores why women leave tech at twice the rate that men do, citing research that the primary reasons are a lack of career opportunity and the work environment itself. Finally, it examines unconscious bias training as an intervention, sharing research showing that simply introducing the concept of unconscious bias could actually increase bias. Instead, the key is to focus on actions that disrupt it.