One of the things that draws me to photographing people is a natural inclination to be absorbed into their lives. When taking a mutually consenting portrait, I feel the first minutes should be spent without camera in hand. Time getting to know the person and the things that define them should come before the camera is applied.
In street situations, I feel the opposite is true. That highly desired intimacy and spontaneity is only possible if the process is entirely one way, anonymous, instinctive but always respectful.
It is also important to remember that light is the true hero, even if the subject is more mundane.