  We describe a viewpoint on the Dempster/Shafer 'Theory of Evidence', and
provide an interpretation which regards the combination formulas as statistics
of the opinions of "experts". This is done by introducing spaces with binary
operations that are simpler to interpret or simpler to implement than the
standard combination formula, and showing that these spaces can be mapped
homomorphically onto the Dempster/Shafer theory of evidence space. The experts
in the space of "opinions of experts" combine information in a Bayesian
fashion. We present alternative spaces for the combination of evidence
suggested by this viewpoint.
