Since I first made contact with the SETI community in the latter half
of 1990 I had a series of exchanges with Dr. Barney Oliver,
Deputy Chief of NASA's SETI Office.
Over the past two-and-a-half years there have been many arguments put
forward for and against the optical approach to SETI. Here now are some of the major
exchanges of arguments and counter-arguments between your presenter and Dr. Oliver: