2009

Rotating a child object in the middle of the hierarchy affects all the descendants but
none of the parents.
If you want to manipulate parent objects by moving the last child in the chain,
use inverse kinematics on page 3374.
Manipulating the Hierarchy
A child object inherits the transforms of its parent, and the parent inherits
the transforms of its ancestors all the way up the hierarchy to the root object.
Because forward kinematics employs this method of inheritance, you must
position and animate your hierarchies using a top-down method.
Animating with Forward Kinematics | 3361