{"id":"circular-sentence-space-boundary-invariant","text":"The circular-sentence algorithm assumes spaces never appear at position 0 or `len(sentence)-1`; indexing `sentence[i-1]` and `sentence[i+1]` around spaces would produce wrong results or IndexError if this invariant is violated.","truth_value":"IN","source":"entries/2026/06/06/circular-sentence-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"circular-sentence-space-boundary-invariant","truth_value":"IN","reason":"premise"}]}}