I'm specifically talking about mechanical rigging here.
I understand bones and armatures are necessary in organic forms where there is deformation in the object, but for mechanical rigging where no parts deform, but only move, does using bones help any?
To me it seems simpler to just use object constraints when rigging mechanical things.
What are the differences between using bones or object constraints?
Are there any benefits bones have over object constraints?
Is there anything that can only be done with one method?