Instead it is more likely that a highly advance species could arrive on earth completely undetected in a parasitic form. This types of alien lifeforms could be at near the nano level or smaller. They can in any type of combinations from biological to synthetic and even or made of dark matter/energy, these lifeforms may not generally be detected and most likely never identified.
With all the potential configurations of DNA, a species that fuses itself with silicon or other exotic materials may be able to exist at microscope scales. As the presence of “solid state” intelligence in “hybrid” (implanted) humans increases, the host biological component’s influence may decrease. This seeming “natural” process, in itself, synergized with the exponential growth of human technology, could lead to the creation of extremely compact intelligent components (ex: nanomachines or viruses) that are, collectively*, exponentially more intelligent than humans.
- Biological/carbon based / dna
- Silicon based
- Other exotic materials known / unkown
- Energy/Information based
Many types of intelligent configurations of matter and energy systems in small scale spaces could exist.
Microscopic Intelligent lifeforms may not necessarily operate relatively quickly either -- a slow moving coordinated attack on a host could prove effective, especially while the victim is sleeping. The biological and synthetic life forms could vary in mixture and symbiotic behavior, and the apparent effects could also vary radically depending on the host itself.
How might one come to realize their own infection?
- Feeling the incredible urge to kill one’s self or others
- Spontaneous changes in diet
- Urge to eat animals, especially domesticated “pets”
- Extraordinary fertility: warning you may be giving birth to aliens (see below)
- Barack Obama
- Zbigniew Brezinsky