I've recently been looking into socio-economic diversity (i.e. coming from a poor/blue collar background) and how it affects progression at professional compani

I've recently been looking into socio-economic diversity (i.e. coming from a poor/blue collar background) and how it affects progression at professional companies. People from lower soc-ec backgrounds tend to focus on technical excellence, and wait to be noticed and promoted, rather than engaging in more overt self promotion. There is a great video on the topic by a guy called Luke Hart here: https://www.youtube.com/watch?v=gwKcjg5lPk8 https://www.youtube.com/watch?v=gwKcjg5lPk8