We all make mistakes. Making mistakes is an opportunity to learn. But as a first step you have to recognize the mistakes you made. If you don't, those mistakes might evolve into a practice. A bad practice. But you can also learn from someone else's mistakes. That's why I crowdsourced "Bad Practices" that people have encountered in the wild. And I was suprised by the numerous examples people came up with. So this session will cover real world examples of practices that are labeled as "bad". Of course we will discuss why these practices are bad and what would be the better solution.