topics: |  philosophy | ontology

attempts to resolve traditional problems of identity over time. It seeks to
answer such questions as "How is it that an object can survive change?" and
"How much change can an object undergo without being destroyed?" To answer
these questions Professor Heller presents a completely new theory about the
nature of physical objects and about the relationship between our language
and the physical world. According to his theory, the only actually existing
physical entities are what the author calls "hunks," four dimensional objects
extending across time and space. This is a major new contribution to
ontological debate and will be essential reading for all philosophers
concerned with metaphysics.