How could a little thing a few inches long have enough intelligence to guide a host body to do what it wants? Same thing happens in Stargate SG1 with the alien parasites in that show.
How are such small creatures able to be smart enough to have a plan and that too from so long ago. The Hive parasites had a plan going back to before modern man for Earth. I thought larger brains equal more intelligence, or the capacity for such.....
It,s not how big it is etc ........
shareMy theory is they were once similar to us but evolved into these creatures over millions if not billions of years.
shareSimilar to us???????
But turning into small bugs isn't that devolving, and not evolving?
Like the Gou'ald, maybe the Hive creatures devolved in terms of size and shape, but evolved in terms of brain processing power (more compressed minds). Also the Hive creatures were implied to be working as a psychic collective (they had to "tune in" by touching the light) and tapped into the brains of their human hosts, so perhaps didn't have to be super intelligent in of themselves.
sharegregforttmags touches on a few good points.
Personally, I don't think the individual creatures ever needed to be that intelligent.
Firstly: They're a hive mind, so their super-intelligence comes from collective consciousness, not the individual.
Secondly: I figured they're a bit like parasites that can trigger different reactions in a host, without the need to be intelligent itself. In this case they're obviously a lot more intelligent than a normal parasite, but I think they're a being that utilises the processing power of the host. Imagine a computer program that takes over your computer. It doesn't need to be anywhere near as complex as your OS or even the other programs you have on your computer. It just needs to be powerful enough to hijack the OS and make it do what it wants, which also fits with the ways in which the original host's personality comes through, twisted by the ganglion. From Steele, through to characters like the racist working with the black priest (can't remember the episode). That shows that the Ganglion isn't simply an intelligent being that overrides the host. It's truly using the host.