If they are looking at me and acknowledge my existence, even if it results in showing their ignorance of the situation, it's all to the good.
Much better than wondering, 'Are they aware I am here? Are they texting? Are they about to pull out directly into me because they aren't aware I am here? For God's sake put down that phone and look up!' Yeah, I have cursed more than my share who forced me to lose all momentum because they stopped waved, slid forward a foot, stopped hard, waved again, slid forward another foot. Yeah. Complete stop, unclip, wave them on smiling real friendly through cursing teeth and look away until they are gone sends the Buzz Lightyear I come in Peace message. I curse them after I leave the intersection and head to infinity and beyond. But I am getting home safely, if it kills me.
I find 'us humans' to be rather dumb at times, not terribly interested in knowing more than the most basic principles of safe driving, the many incidents I have on the road that indicate more malicious intent is borne out of their own frustration with knowing how to conduct themselves on the road, so they lash out. We made them aware of their incompetence, so we are the problem (in their minds).
I ride mostly in rural and suburban areas. How you guys in urban areas do it is beyond me. I am not sure if I could get used to it.