Great question,
derekwelski! I'm glad you asked this - people often wonder when the right time to frame is.
The decision to frame is always based on two major components: 1) a divide in the game, where things can only work one of 2 or 3 different ways (occasionally 4) and 2)
consequences of that divide.
It's the second of these that is harder to fully master. In this game, from the rule you mention, we have three essential possibilities:
1) A world where Jerry drives Wednesday, but not Saturday
2) A world where Jerry drives Saturday, but not Wednesday
3) A world where Jerry drives on both days
These are the only three worlds that can exist, so it's a clear
divide in the game. But are there consequences? I can't eliminate Jerry from the other days in any of the three worlds, since nothing would prevent Jerry from being on those days
also (and in fact, the rule explicitly reminds us of that).
In the two worlds where Jerry drives on Saturday, I could eliminate Gina from Monday......but I wouldn't really know much else. Ultimately, there's not much else to infer in these three worlds. If I were to frame, I'd be left with three almost entirely empty frames, and that doesn't seem like a great use of time.
I often encourage students in the beginning of their Games practice to frame anything and everything they see - the idea is that you'll never find the dividing line that separates good-to-frame games from useless-to-frame games unless you go overboard, and then pull back. Ideally, with a game like this, you would TRY framing out, then after you finish the game, look back and those frames and ask yourself 'did those actually help at all, or was it a waste of time?'
Here, the frames are just not that helpful.
Here's the way I'd set up this game instead:
Please let me know if that completely answers your question!