Self-Check
No clock, no whole paper, no score to defend. Pick one domain — error budgets, or on-call, or chaos engineering — take a quick 10, and answer each question cold. The moment you commit, you find out whether you were right and read a short explanation of why. Options are reshuffled every session, so you're recalling the answer rather than remembering that it was the third one. Anything you miss is remembered on this device, so ↻ Past misses always has your weak spots queued up and ready to drill. When you want the timed, whole-paper rehearsal instead, that's the Exam Simulator — same question bank, a completely different exercise.
Rereading the page on burn-rate alerts feels productive, but recognising a fact and producing it from memory are two different skills — you can pick the right answer out of a list without ever being able to say it out loud unprompted. So this page never shows you the answer first. You have to commit to one, and only then does it tell you. Getting it wrong is the useful part: a miss is an honest, precise map of what to go back and read. That's the same reason SREs run game days instead of assuming the failover works — you'd rather find out now, cheaply, than at 3am.
Benny the Beaver: I've read the error-budget page three times now. I'm solid on it.
Timmy the Turtle: We don't call a service reliable because someone feels good about it — we call it reliable because we measured it. Same rule applies to you. Take the ten.
Benny the Beaver: …seven. I had the burn rate upside down.
Sol the Sloth: Then you found that out in thirty seconds instead of during an incident review. Three misses isn't a failure, it's a reading list.
Professor Owl: Which is the whole discipline in miniature. Cheap, repeatable checks, run often, and you fix what they find.
The chip on each question names its domain, and the animal on it is that domain's host from the Reliability Watch — see Pip on a question and you already know you're in on-call territory. Clear a whole domain at 70% or better and you earn that character's 🏅 badge. Work one domain at a time rather than sampling everything at random: a run of misses all wearing the same animal is telling you exactly which lesson page to reopen. For fast recognition drilling use the Flashcards, look terms up in the Glossary, and save the Exam Simulator for when you actually want the clock.