I think part of this reply touches on your question: http://jadagul.tumblr.com/post/166000094778/how-social-bubbles-are-made (section “acting with intention”, but I recommend the whole thing).
I think part of this reply touches on your question: http://jadagul.tumblr.com/post/166000094778/how-social-bubbles-are-made (section “acting with intention”, but I recommend the whole thing).