◊ Magic Numbers in SR problem

  1. "oh yeah a leech is after 8 failures"
  2. "2nd rep after 1 day is best"
  3. "introduce 12 cards a day"

  4. ↑ core ◊ Spaced Repetition issue

Set equal to your best guess of the fact’s half-life. In ‣ Memrise, the first quiz occurs four hours after first learning a fact; in ‣ Anki, it’s a day after. To mimic these, set to four hours or a day, respectively. In my apps, I set initial to a quarter-hour (fifteen minutes).

ebisu doc, about initial interval