Better to think of it in terms of “Membership” in a “Set”. An object can be a “member” of more than one information set.
To use the kid analogy from above, one kid (object) can be a member of three clubs (Blender Collections).
His name appears on the roll call of each club, but he is still only one kid.
As Omar said, once you grasp that, it’s a very useful and powerful concept.
