allow me to pick out faults.... (SPOILERS AND SWEARING AHEAD)
1. The Engineers (space jockey's ffs) were re-written to no longer be cthulu-esque aliens which were destroyed by there own creations (the aliens) in an attempt to use them as bio-logical weapons against other members of their own species, instead we get some crank up the crazy discovery channel documentary style plot where the engineers seeded earth with their DNA in an attempt to create life, they then repeatedly visited earth to give us knowledge and information as to where we could find more information. This is annoying because later in the film it is made very clear that the