Yesterday's piece ended with a test: four items, PASS / FAIL / UNKNOWN, UNKNOWN counts as FAIL. It was a good test as far as it went. It had a hole, and the hole is the whole subject of today.

Source: [Dev.to](https://dev.to/goodpa/the-rehearsal-layer-or-an-escrow-you-have-never-opened-is-indistinguishable-from-no-escrow-54fg)

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