  A basic inconsistency arises when the Theory of Special Relativity meets with
quantum phenomena at the Planck scale. Specifically, the Planck length is
Lorentz invariant and should not be affected by a Lorentz boost. We argue that
Planckian relativity must necessarily involve the effect of black hole
formation. Recent proposals for resolving the noted inconsistency seem
unsatisfactory in that they ignore the crucial role of gravity in the
saturation of Lorentz boosts. Furthermore, an invariant length at he Planck
scale amounts to a universal quantum of resolution in the fabric of spacetime.
We argue, therefore, that the universal Planck length requires an extension of
the Uncertainty Principle as well. Thus, the noted inconsistency lies at the
core of Quantum Gravity. In this essay we reflect on a possible resolution of
these outstanding problems.
