Nice episode. One thing I would just like to say; David soundly dismisses the Billy Meier case based on his expertise of image analysis and no doubt a great deal of common sense as well. Of course, many thinking people just know it is a fraud based on the convoluted story, however David's expertise enables him to point to specific instances where fraud has been perpetuated. Similarly I dismiss Bob Lazar case based on my expertise, I suspect that Lazar was a ruse by John Lear to try and shake the tree hoping that the "real" reverse engineering scientists involved would see Lazar and then decide to speak out as well.
My feeling is that the MJ-12 documents were a similar type of effort.
Simply, Lazar is to physicists what MS Paint is to Photoshop.
A remark mentioned by Don that alluded to Scientists being stuck with a set of beliefs and being firm in them is alas somewhat correct. It is not the way it is meant to work buy unfortunately it does.
Here's a quote by one of my heroes, Max Planck
Max Planck said:
“A new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because its opponents eventually die.”
Finally, in one show I heard David mention that UFOs have a system to negate their mass, I concur with this and it is a simple and elegant solution. I have heard people speculate about inertial dampening systems and other much more esoteric ideas, however negating mass is a much simpler idea and something I feel we are less than 30 years away from doing ourselves.
However, I do disagree with the bending space & time theory of how UFOs travel the universe and I believe this is the explanation Lazar used and is common when talking about how UFOs travel from there to here; I see it as too one dimesional, literally.
A hypothesis I tend to lean towards is hyper-dimensionality: image if you will a bunch of 11 concentric circles, our physical reality is located on the outmost circle. To move quickly in our physical reality you change your frequency to that of the inside circle, move a small distance in it and then change frequency back to that of our physical reality. The small distance you move at the higher frequency (or dimension if you like) translates to moving a vast distance in our dimension. Speed of light exceeded in our dimension (and time travel) but relativity is obeyed. In fact what is to say our visitors are not even inhabitants of one of the inner circles?