There is plenty of evidence, and judging by what I've seen in the first three series, it's very convincing. For some reason people who want to be seen as sceptics delight in rubbishing what I would call valiant (if sometimes misguided) attempts to research what must be one of the most frustrating research projects ever. Regarding the hitchhiker phenomenon -- yes, it was that which first drew the attention of the intelligence community, and one of NIDs' major pieces of research was to establish that transmission followed the same rules established by medical researchers for the transmission of viruses. But it was never, ever, described as "evil poltergeists." Now if someone wants to question specific experiments carried out by the team in a sensible manner I have absolutely no objection to that. But when they paint themselves as "sceptics" and clearly have an agenda, that's a different thing. Now as far as I can see there is strong evidence of unusual energy spikes there, often correlated with a 1.6Ghz frequency, often strong enough to cause physiological effects. There is also evidence, which the team seem very reluctant to admit, that the anomaly above the triangle is capable of anticipating their every plan and negating it. (I do a disservice to Tom, who seems very aware that their efforts are being monitored and negated.) For example, the fact that it seems capable of systematically removing information from telescope star databases and also interfering with the trajectories of rockets fired up at it, even of distorting visual perceptions (as when they were dropping GPS trackers from a helicopter) -- in fact that episode showed that the onboard camera (presumably operated by the film crew) also captured a disorted image. The anomaly also interfered with a laser beam in a very bizarre way. Every episode highlights some very mystifying phenomena. To me the ancient Jewish prayer recital at Homestead 2 which generated totally bizarre inverted heat phenomena, on two separate occasions (the second with the playback of the original chant), all captured on video, has to be one of the most remarkable experiments, and it's odd that none of the sceptics have come up with a plausible answer to that one!