Only one anchor rotate in hard constraint position mode?

[bbrcn 0]

Hi

I just want to confirm if my understanding is correct.

Basically in a simply scene like this. Two object hard constraint together with two anchors in between. 

When constraint_type = "position", only one anchor should rotate. Simply because only two object involved, if they are constraint by one line, they should rotation around one point. 

If we want to achieve effect of box rotate around two anchors, there has to be a third object in between. Otherwise there will only be one anchor rotate. The other one will never rotate in constraint_type = "position" mode. 

 

 

 

I'm not sure my understanding is correct, can someone confirm this? 

Thank you.