Well made, high production, but on tricky subject and "thin" science, so to say. If someone already "glides" into muddy waters of today "UFOlogy", they definitively should be more precise and thorough. I'll try to illustrate here through the contents reduction...
While I'm personally not intrigued with such questions and being more interested into scientific Fermi's paradox point of view; after watching first three episodes I came with a much firm Answer to extraterrestrial interest in (super-)volcanic activity.
Being a part of seismically active, and therefore volcanic system that could be one of a dozen global super-volcanoes. Say, aliens could simply be monitoring activity of these "global killers" interested in eventually settling our planet, after volcanic winter. While not hurting people directly. To clearify, one of such eruptions, 75.000 yrs ago nearly destroyed homo-erectus and presents (geologically) recent "bottleneck" of our species. Super-volcano Toba in Indonesia destroyed most us then, and by some (mostly genetic) studies some thousends survived from about a million, pre-event.
So, above is an example of how three 45 mins episodes can be explained in just one paragraph. It illustrates story-idleness (though filled instead with good narration, scenario, photography and other fruits of high-budget production),
I would recommend to interested to find something more comprehensive or more serious on the subject.
Review of Contact
