@@ -139,9 +139,7 @@ TLDR: no, it doesn't.
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140140We can prune the event log because the Urbit transition function doesn't have any access to the event history -- just the current state and the current event.
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142−Urbit defines the semantics of a complete event log. It doesn't and can't require an implementation to maintain the whole log. It can maintain a checkpoint and the log since that checkpoint. The current implementation of Urbit maintains
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144−However, any practical urbit maintains a periodically updated checkpoint. Our present implementation doesn't provide a way to prune the event log, but that's just a missing feature.
142+Urbit defines the semantics of a complete event log. It doesn't and can't require an implementation to maintain the whole log. It can maintain a checkpoint and the log since that checkpoint. The current implementation of Urbit keeps the whole log, but the next release will optionally prune it.
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146144## Urbit will never be able to call any existing code.
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