[Alex]

Originally Posted by innerSpaceman

Spoiler:

But if she received the text in the universe where Colter never went on a mission, and thus never proposed he could do that ... was she just totally confused and baffled by receiving the text from the lump of meat in the freezer in the corner? Perhaps as confused as I am right now?

Spoiler:

No. She's aware of what her project's mission is. She gets a text message that claims to be from the lump of meet in their freezer.

She might not believe it but the message tells her things about the program that are almost certainly super secret and also tells her she's going to learn about a foiled terrorist attack on a Chicago-bound train and that the terrorists name is X.

She's walking into Jeffrey Wright's (the black guy) office to show him this when she overhears the Army guy telling Wright about the terrorist attack, confirming the text message.

The message further tells her that is was her and him working together that actually foiled the message and so she should now understand what is really happening when, in this new timeline, they actually do use him and start spawning yet more alternate realities.

This actually creates an interesting idea for one long chain of alternate universes. Each time they use Source Code they prevent the terrorist act
in question and thus spawn a timeline in which the terrorist act did not occur and so Source Code was not yet put to the test until ultimately the program is defunded and shut down for no longer being needed.