  The formulae of special relativity are developed through the k-calculus with
no presumption of a manifold. The metric is determined empirically by the
exchange of photons, and the treatment suggests that the exchange of photons
seen in quantum electrodynamics is also responsible for the 'fabric' of
Minkowsky space-time. This suggests that on quantum scales the point-like
nature of elementary particles, should appear 'defocussed' or 'fuzzy'. Further
work on the implications in the laws of physics is referred to
