obsolete mutually specifically depends on true It would need further development, but it is no longer used by any other terms. It would need further development, but it is no longer used by any other terms. John Judkins Mathias Brochhausen OBSOLETE This relation holds between two specifically dependent continuants, a and b, where b is of its nature such that it cannot exist unless a exists and where a is of its nature such that it cannot exist unless b exists. http://ncor.buffalo.edu/2016/deontic-gainesville.pdf