What a fantastic experience for you and Brett and thank you for sharing it with us!!  You are so fortunate, as Google is certainly one of the epicenters for the future for this technology!  What is so interesting to me about VR is that our brains cannot distinguish between 'VR worlds' and the real world, meaning that experiences like the superhero helicopter pilot do alter our behavior (rewire our brains) in the real world - it is estimated that behavior change can 'stick' for  many months.  In the case of increased empathy resulting from the avatar experience of discrimination, empathy can potentially last a lifetime.  As our whole bodies become immersed in the experience even muscles can get a 'real' workout as well.  We can only imagine how this training can be used for good in the world, for example igniting neurons to trigger movement in the paralyzed.   Unfortunately there is the dark side as well, such as 'real' trauma experiences from game warfare and violent VR environments.