Originally Posted by
JeffOYB
Today's unsafe bike culture relates to the dominance of straight arm riding and the resulting swoop-turning.
I have no idea what "Today's unsafe bike culture" is supposed to refer to. All I know is your concerns seem to have nothing to do with the riding I do, maybe it applies to group riding, but I'm just not seeing people go down by taking too wide turns or even having close calls for that reason.
But you seem to be in need of physics teachers to answer your "how do I explain" and "what is the science" questions.