I think around 1 1/2 years. The primary deck that I'm using has 75000 reviews of cards. It has at the moment a total of 9500 cards.
Good point. Anki records the data in it's database. But I should probably just take a note of it in case I dedice against delving deep into the database.
To you journalists already focus on, "quantified self is about being public with your sex data" that I would stay out of giving that argument any ammunition.
Yes, I'm tracking a bunch of variables. Mostly every day after awakening. It's something I do regardless of this experiment.
Taking longer to recall is not the same thing as taking more time.
If I understand Piotr Wozniak right speed does not correlate with how well you know the card when you look at it the next time.
At the same time Piotr Wozniak is a strong believer in calculating the forgetting index to find the point when you are just on the verge of forgetting and believe that's more valuable for stabilizing the memory.
Running 1 km in 2 minutes is more effortful than running 1 km in 4 minutes.
When my head feels very clear, my speed at answering cards is higher. I think that's a good sign. Even if I would temporaily raise the amount of cards that I remember by slowing down a bit, I think that would mean less deliberate practice at doing Anki.
I think the fact that I'm getting faster at doing Anki over time is a good sign.