FORCE FIELDS is
tion do not fit the description of the four forces of the universe. Yet it
may be possible to simulate many of the properties of force fields by
using a multilayered shield, consisting of plasma windows, laser curtains, carbon nanotubes, and photochromatics. But developing such a
shield could be many decades, or even a century, away. And if roomtemperature superconductors can be found, one might be able to use
powerful magnetic fields to levitate cars and trains and soar in the air,
as in science fiction movies.
Given these considerations, I would classify force fields as a Class
I impossibility-that is, something that is impossible by today's technology, but possible, in modified form, within a century or so.