Giant Hugger

the secret is in the black goo..it accelerates growth i think. Although it might share some DNA with the little ones, but they are not the same. Hope this makes sense..he he.

This "body-hugger" (trilobite) is, IMO, not the "normal" creation that is supposed to happen. To me, it is an unintended byproduct of the black goo "bio-weapon". Under normal conditions, I think the weapon is supposed to create mutants like Fifield. The chances of a male of the target species drinking a drop of it and impregnating a female are very, very remote. But we did get to see an extreme situation of what could happen if such a thing happened. The "bio-weapon" is SOOO adaptable that it "will find a way". I know this all begs the question: what would happen if Holloway continued to evolve. Would he just disintegrate or would he grow a "deacon" (body-burster) inside of him? What would have happened if Shaw had not removed the trilobite? What actually happens when an urn is launched to terraform (destroy the life on) a planet? Does it simply turn the lifeforms into mutants that eventually hatch trilobites that impregnate other lifeforms creating deacons? It is all a marvel to behold, actually. A bio-weapon that does it all and adapts to any situation. Black goo is nasty stuff.....that's for sure.

I just thought that the black goo made Holloway's sperm into monster sperm and it overpowered Shaw's reproductive system. I thought it was plenty scary, but it should have at least been a threat to Shaw for it to really have been scary. You almost cheer for it when it gets the Engineer, but you don't know if you should feel bad for the Engineer because you don't know his motivation.