It has not made much sense for Sierra to flip. Her insider videos have her weighing her options and she despises her blue collars but realizes that they are unlikable people and would rather be at the end with them than with someone like Hali/Jenn/Joe. I would have liked to see Sierra flip, because I loved Hali, but it honestly did not make much sense at this point.

I don't think Carolyn and Tyler are in the position to change up the game just yet, either. It's about making a move when the time is right and the time has not been right yet. They are two, so it's better for them to make a move at 8/7 in order to guarantee themselves to not be at the bottom of a 3 person alliance. I actually like the game that Tyler/Carolyn are playing a lot.

*~*~*image*~*~*