I’ve seen there are a few older similar threats on the topic, but I couldn’t exactly see what I’m looking for.
I’m used to use “Set Due Date” on a specific deck, where I have cards I want delete or suspend, but also not learn regularly. So I set them to 5 years to see them then again.
Other cards in the deck I learn normally.
Now I changed to FSRS. I don’t matter when such a “Set Due Date” card will get an irrational interval after seeing see for the next time. It is kind of a last test and for me ok.
But I worry about, what happens through FSRS to my “normal” cards, when I use “Set Due Date” as I did before.
I was worrying, that this could also influence (lengthen) the interval, when I introduce a new card into normal learning without “Set Due Date”. As said, I just switched to FSRS and I’m still a bit wary with it.
The scheduling of one card doesn’t impact the scheduling of another card [except for a little bit based on balancing your study load across days].
Your review history on a card that is included when you Optimize does impact all of your cards, but only a tiny bit, because it’s mixed in with all of the rest of your cards and their review history.
