I teach that the foundation for our practice is being able to go inward and disconnect from the busyness of our thoughts, that focusing the mind on bodily sensations and breath will ground us in the present moment. Yoga is about realizing who you really are, aside from your persona.
But the extraordinary insight which some persons are able to gain of others from indications so slight that it is difficult to ascertain what they are, is certainly rendered more comprehensible by the view here taken.