We often use experts to back up evidence and to lend weight to legal points made in courts. We listen and give weight to the opinions of lawyers, doctors, teachers, scientists and others who we consider to be 'authorities' on a subject. So, when a number of these authorititive people make statements about something in which we do not believe (such as UFO's or aliens for example) we still dismiss their testimonies as if they were making it all up or as if they are not really experts in their field. In particular, I refer to the hundreds of governmental employees, scientists and other experts who have put their name to the Disclosure Project organised by Dr Steven Greer. Although nothing much seems to have come out from this project in the last few years, over 450 military personnel, some with very high security clearances have testified that aliens are in fact here and UFO technology has been traded and used by the military. Bear in mind that some of these witnesses were in charge of our nuclear arsenal and held positions of great responsibility and in every other way are/were respected members of their organisations. It seems that it is not yet acceptable for respectable scientists, such as many of you here on this forum, to subscribe to the belief that aliens are already interacting with our government - even though there is plenty of people who are respectable and accepted as authorities in their professions, who have told us otherwise. What 'evidence' is enough? What 'scientific proof' will EVER be available, before the belief is widely accepted by the scientific community? How many papers need to be written for you to accept this as 'fact' ? Which scientist would put his/her reputation on the line to write such a paper? Basically, what I am saying is that there is no evidence that can be presented which will provide proof for this. Even if we saw an alien on the evening news, talking and interacting with humans it could still be generated by some whizz-kid in a video effects lab somewhere. Technology is so good that this is not impossible and could easily be generated if the resources were available and motives were present.