{"id":"maxdepth-none-returns-zero","text":"`maxDepth(None)` returns `0`, establishing that depth counts nodes on the path, not edges (a single node has depth 1).","truth_value":"IN","source":"entries/2026/06/06/maximum-depth-of-binary-tree-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"maxdepth-none-returns-zero","truth_value":"IN","reason":"premise"}]}}