When looking back nowadays to the work done on diversity, I’ve realized that it has been quite a trip! My first approach to the topic was in an informal meeting with Nithya Ruff, currently at Comcast. She mentioned that the OpenStack Summit in Tokyo reached (as far as I remember!) 13% of women attending the Summit. And this was a great number if compared to previous summits as the percentage kept growing. But she also mentioned that they received a tweet asking about the current number of technical contributions. Then this is where we decided to have a look at that issue: have numbers, and try to produce some of them from a quantitative point of view.