MockCross
Built at Gemini 3 Hackathon SF · Dec 6, 2025 · San Francisco, CA

This project demonstrates **“Gemini as a Teacher”** by tackling one of the hardest real-world skill problems that exists: teaching attorneys how to conduct elite cross-examinations. Cross-examination is widely considered the most difficult skill in trial advocacy. Even seasoned trial lawyers struggle with it. Unlike many legal tasks that are repeatable or research-based, cross-examination requires a rare convergence of abilities that almost no existing training systems can replicate: - Real-time psychological reading of a witness - Dynamic questioning under pressure - Strategic sequencing with imperfect information - Emotional regulation in adversarial dialogue - Jury persuasion across varying personality profiles - Instant adaptation to objections and judicial rulings Most attorneys practice cross-examination **without realistic feedback loops**. True exposure to real-pressure cross-exams only happens once attorneys step into court — where mistakes carry permanent consequences.