We are having a little debate on these lines in the UK at the moment, not on
Gaucho but on GM crop field testing.  Having attended meetings and a public
debate as well as talking privately to people both pro and anti I am arriving
at a few basic principles.
1. It is no use arguing with somebody whose mind is made up.
2. You conduct a scientific test when you already know what the answer will
be and it is the answer you want.

Chris
(Thinking I must be getting even more cynical)