Part of the point I'm trying to make is that ,as in the photo below, it is pretty obvious that HCB found a setting and the perspective he wanted to use then either waited for, or arranged for, the bike to zip by. http://overhereplease.wordpress.com/...e-me-think-14/
Similarly Steve McCurry applies the same principle. http://stevemccurry.com/galleries/japan?view=grid
Not everybody sees/catches the relationships of the visual elements.
I have buddies that ave shot with McCurry and my buddies learned from him real quick to find a subject person then drag said person to where you want them for the shot.
We can also do things like grab Chuchill's cigar to manipulate the mood/expression of our subjects.