  The ``unification'' of fundamental physical forces (interactions) imagines a
``single'' conceptual entity using which {\em all} the observable or physical
phenomena, {\em ie}, changes to physical bodies, would be suitably describable.
The physical, conceptual and mathematical, framework which achieves this is
that of the recently proposed Universal Theory of Relativity \cite{smw-utr}.
Here, we argue that the mathematical framework required to achieve the
``unification'' should be that of the general Category Theory. There are
certain unanswered mathematical questions arising out of this context. In the
sequel, we also point out these issues for the wider attention.
