{"id":"single-row-keyboard-no-validation","text":"`calculate_time` assumes all characters in `word` exist in `keyboard`; a missing character raises an unhandled `KeyError`","truth_value":"IN","source":"entries/2026/06/06/single-row-keyboard-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"single-row-keyboard-no-validation","truth_value":"IN","reason":"premise"}]}}