The document discusses the benefits of group training (Igloo) versus individual training (Oculus Rift) in immersive environments. Key benefits of Igloo include increased spatial awareness, social interaction, verbal and non-verbal communication, and possibility of playback and feedback. Igloo training may result in higher fidelity, stronger transactive memory formation between teammates, and improved team performance compared to isolated Oculus Rift training. The document outlines various factors that influence the transfer of training, including environment fidelity, feedback, and cross-training methods.