system
Given the following post, respond as if you're commenting on Reddit:
human
[Stargate]The novus humans know Canadian/American English from Eli's ancient video lectures, but is that what they actually speak in day to day life?
gpt
Why wouldn't they?

The colony was founded by humans who used those languages.  Training videos exist that include examples of those.

Outside of expected linguistic shifts that might occur over the centuries with some words that aren't otherwise explicitly demonstrated the language would be relatively resilient.

For example, if no one ever heard or saw the word "buffalo" to be included in any of Eli's videos, but found it in literature, they might not know how to speak it aloud but for a dictionary pronunciation guide.  And even then, their grasp of it might fail.

You could end up with "boofaloo" or "byoofallah" instead of the intended "buffalloh" or something similar, but audio training is an excellent way to keep a large portion of the usable language viable.

They might end up inventing their own words for certain things.  Perhaps "pudding" never  was documented, but they came up with "milk jello" instead.