Derived from the Reetou wasn't it? But yes, she developed it. I think it's fair to say the Goa'uld develop technology well, but the initial concept and design is rarely theirs.
I think the root problem is anthropomorphism - Goa'uld are not human, hell, they aren't even humanoid, so that, combined with their parasitic nature almost certainly means their psychology works very, very differently to humans. Therefore ascribing human attributes to the Goa'uld doesn't work. They may do things that seem bizarre to us, but make perfect sense to them because of their biology.
For example: the Goa'uld are naturally long lived, even longer lived with the assistance of technology, and come from a hostile world. Unas probably attacked and killed any other Unas that they believed to have been taken over by a Goa'uld.
As intelligent internal parasites, staying undetected is probably a powerful biological drive - Goa'uld are the ultimate infiltrators, after all. Just as we modern humans still have drives that are largely unchanged from when we lived in caves, so the Goa'uld probably still have the same basic parasitic drives despite ten thousand years plus of advanced civilisation. For them, change is bad. Change means you stick out, it means potential predators or competitors can detect you. So while stagnation and using the same tech for thousands of years is bad or odd from our point of view, to a Goa'uld it probably makes perfect sense.
For example: the Goa'uld are naturally long lived, even longer lived with the assistance of technology, and come from a hostile world. Unas probably attacked and killed any other Unas that they believed to have been taken over by a Goa'uld.
As intelligent internal parasites, staying undetected is probably a powerful biological drive - Goa'uld are the ultimate infiltrators, after all. Just as we modern humans still have drives that are largely unchanged from when we lived in caves, so the Goa'uld probably still have the same basic parasitic drives despite ten thousand years plus of advanced civilisation. For them, change is bad. Change means you stick out, it means potential predators or competitors can detect you. So while stagnation and using the same tech for thousands of years is bad or odd from our point of view, to a Goa'uld it probably makes perfect sense.
Well said. Same species, different biological classification. It always annoyed me when a Goa'uld was referred to as a symbiote. Only the Tok'ra are symbiotic. System Lords are parasites and should have been named as such - not least because most humans have an innate revulsion towards the very idea of parasitism.
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