Mark Mandel gave a presentation on the challenges of introducing open source software to the games industry. Some of the challenges include developers thinking their code is too unique to share ("It's Not Invented Here"), concerns about sharing code legally ("I can't share that with you"), and a lack of familiarity with open source practices like pull requests. Mandel recommends education about open source tools and processes, doing open source development transparently and bringing in outside contributors, and actively recruiting companies to contribute back to open source projects.