The fingers seen breaking up clumps of soil on the alien planet seem just to be human fingers in white gloves, not the mechanical fingers of Jessica's 'human 2.0' body.
In the 35th minute, Alex Grant asks of first contact (with an alien species or race) may be with a human-like, or with a microbe. A microbe could not have space travel capability.
The characters recycle very few outfits during this documentary that supposedly covers a few years; this is most noticeable with Gillian.
At 3:08 Gillian Laroux (Jane Perry) accepts a call on her mobile phone and talks with the display visible to the camera. In a normal call the display would show the caller id or the number on a black screen with a red close call button at the bottom and would fade out as soon as the person holds it to the ear. Instead the home screen (a wallpaper with yellow flowers) is clearly to be seen and fades out because of inactivity.
Lamont states "The brain can live without a body, but the body can't live without its brain." The opposite is true. Although rare, some individuals with anencephaly (lacking most of the brain) have survived for years but a brain disconnected from its supply of oxygen and nutrients will die in minutes (barring the kind of technology available in this film (or numerous other disembodied head movies)) .