The growing importance of responsible AI was discussed by Arize AI CPO Aparna Dhinakaran at Re-Work, highlighting challenges such as lack of access to protected attributes, no easy way to check for model bias, tradeoff between fairness and business impact, and responsibility diffused across individuals, teams, and organizations. The presentation emphasized how human bias can be introduced into data through proxy information and sample size data, leading to biased models that disproportionately affect certain groups. To optimize model fairness, Aparna recommends increasing organizational investment, defining an ethical framework, and establishing tools for visibility, such as ML observability, which enables the identification of problems before deployment and allows for troubleshooting and fixing issues.