Mike Kaliski wrote:
It was Richard Feynman who 'proved' that light always travels by the most
direct route (i.e. a straight line) between two objects.

The famous relativity experiment that allowed men to
"see" a star "hidden" by the sun is a good example.

My point was that man's imperfect "laws of physics"
are often violated and have to be revised or discarded
in favor of a new set of laws of physics. If the
scientific progress over the next 1000 years
equals that of the last 1000 years, most of what
we think we know now will no doubt be revised or
proved incorrect and discarded.

For instance:
The laws of physics based on non-empty space (ether)
were discarded only to be revived in different form
by the discovery that empty space is far from empty.
--
73, Cecil http://www.w5dxp.com