Mike Kaliski wrote:
Clearly some things do appear to travel faster than the speed of light in a
vacuum. The jury appears to be out as to whether any practical use can be
made of the phenomenon.

A few centuries ago, the jury was out on whether any practical
use could be made of RF waves. The people who seem to know
what it is possible to know remind me of the patent office
employee who asserted (100+ years ago) that all possible
inventions had already been invented.
--
73, Cecil http://www.w5dxp.com