Time-travel stories usually annoy me, because they so rarely get it right. It does happen once in a blue moon; however, SG: C is not one of them.
But I can enjoy a competent and entertaining story, even if it misrepresents time travel, because I’ll admit that the way things would probably work is far less dramatic.
I am, however, annoyed at plots that require the primary antagonists to be foolish when they’re not supposed to be.
One, Ba’al is ambitious and smart enough to do the obvious thing and go back in time to a point after the demise of the Ancients but before his species began to spread through the galaxy. He could have dominated the entirety of the known universe. Instead, he apparently wanted to lord over the other Go’auld enough to travel to a point where he could dominate them militarily.
More problematic is that if Ba’al’s system could go so far back, Anubis should have known how to do the same. Yet he didn’t — and it’s not because the Ancients would prevent him. Anubis was limited to things he could have done if he’d remained a mere brain parasite. Ba’al managed to build a time machine, so Anubis could have done the same. He probably also knew about the effect — SG-1 discovered it only because their gate had most of the safeties removed, and Ba’al discovered it by stealing that knowledge from Earth. But Anubis knew quite a lot about the Ancients and their technology.
I was disappointed in Continuum, and felt that The Ark of Truth was better, not only in terms of its plot but its timing. The extra room given the production isn’t taken advantage of well — for every moment of quality character development that would normally have been cut for time and got to exist in this movie-length production, there are three moments that probably should have been cut or at least paced differently.
I’m not sorry I watched it, but I think it could have been improved upon.