posted on Mar, 5 2008 @ 06:21 PM
Sorry for sounding like a broken record on this, but I'd say that one big 'NO' against aliens having landed or contacted the Earth, is that we are
still here and are not dead due to some alien virus.
Seriously! Though sterilization and quarantine procedures are likely robust for space travelers, according to
Locard there will always be trace contamination.
In fact the definition of a '
sterile field' is bacterial contamination
reduction of about 6-logs. There will still be on the order of 10e2 microorganisms per sq.in., and this would only be for tools and equipment. It
could not be attained on intact skin, or in the ambient air.
Alien microbes, as we've seen in H.G. Wells'
'War of the Worlds' is undoubtedly a real concern. Though it's possible that alien microbes
would be less virulent it's more likely that they are very virulent (us having no natural immunity), and they could produce potent endotoxins.
So, to me, the fact that we have not had an alien plague sweep the nation, is at least one strong indication that extraterrestrial biological entities
have never set foot on Earth.
If they do, and I hope every 'Alien Retrieval Hot Team' (
) has an exobiologist. All we need is to have some hotshot Delta Force guy shoot one,
penetrating their excursion suits, and releasing a plague.
[edit on 5-3-2008 by Badge01]