In this tour you'll see
What the tutorial covers
1
Why the standard test fails. Ablation is an intervention: a dormant backup absorbs the damage, so the primary and the backup both look unimportant — and the circuit becomes incomplete under its own test.
2
The conditional-growth score. How much each unit's ablation effect grows once the primary set is removed — label-free, gradient-free — plus the two results that say conditioning is the right instrument.
3
That it works, and that it matters. 0.941 backup recovery with a matched-impostor control at chance, a causal wake-up test, and circuit incompleteness cut from 0.47 to 0.24.