On Nov. 29, a team of young adults stood in front of a crowd at The Link coworking space in Kendall Square, Cambridge, Massachusetts, and presented their idea for a smart, watch-like device that monitors a user’s vitals for signs of anger and prompts them with guided breathing exercises. The device would also connect via Bluetooth to a virtual reality headset that could lead the user through conflict resolution scenarios. Such high-tech presentations are common in Kendall Square, but the presenters weren’t a team of PhD students — they were…