Quote from: Astronoë on Dec 25, 2016, 01:17:50 AM
Humanity has colonized the galaxy and have strict quarantine between world's, Ripley mentioned it in passing. First there's the fear of alien bacteria n stuff n there's has to have been some outbreaks considering the sheer amount of systems in the galaxy we colonized in a short time. Considering humanity is still around n thriving they must have overcome bio threats n won't be caught unprepared.
Even if Xenomorphs could somehow infect one world, they couldn't do it against all our worlds with humanity unawares.
2nd our armies would be better n with robots n drones n stuff, the xenos would hit a wall.
Humans despite their faults are better survivors than xenos, only in movies could we be threatened, unprepared, undergun'd n stupidity exists to drive the story forwards...
I would be more afraid of the Predators who have all the tools to overcome humanity..stronger, very intelligent n better technology.
Xenomorphs lack all the tools needed to tip the scales..
The Xenomorphs would need to at least be at the same level as the Zerg to be a threat (Zerg would eat xenomorphs alive) those (Zerg) were overblown as well (no defense against long range weapons n nukes).
Predators choose not to wipe us out even though they could, the Protoss as well, isn't that true supremacy? Feeling secure in their power.
Xenomorphs though kill whatever's in front of them with no vision n always feeling everything is a threat to them. They are limited...
Honestly, the blow of an extraterrestrial infection by a microorganism is extremely rare.
Why ? Because for there to be infection, it is necessary that the microorganism is co evolved with us.
It must produce proteins that will have an effect on our human cells.
This is why viruses and plant bacteria do not infect us because these pathogens have co evolved with plants.
There are over 100,000,000 viruses per mL of seawater. Why are not you infected? Because the vast majority consists of bacteriophage which infect only bacteria and are incapable of infecting humans.
Of course some insect viruses can infect humans but when we look more closely, there is a pluri co evolution between the vector and the host.
This is why it is unlikely that an extraterrestrial cellular or viral pathogen infect our organism.
Of course, the alien in frontal combat against humanity can do nothing. However, the action of the alien is insidious like terrorism. Generally when a zone is infected by xenomorph the only solution is the total destruction of the area and it is generally like that that happens in movies. Except for alien 3.