Each question type picks a rigor level for “learned today” and “still known later”. The numbers behind that label come from your definitions (for your content) or platform definitions (for community and built-in content).

Very loose → very strict raises evidence window, thresholds, session spread, and often switches strong students from fast-track to stretch. Repetition intervals usually shorten as rigor increases.

Fast-track skips remaining variants when a streak is already high quality. Stretch serves a harder item first — pass consolidates immediately; miss returns to normal flow without penalty.

Floor score, unhinted evidence, distinct sessions, and illusion blocking stop a lucky streak or repeated hints from counting as mastery.

Quest settings change what a level means for all your types. A single type can still pick a level chip or flip to custom numbers for a one-off gate.

Use standard for most teaching. Choose loose for exploratory units; strict or very strict before high-stakes exams or for procedural subjects that must not leak gaps.