What the Jubilee Backtest Actually Shows

In the older reading of the Law, every fiftieth year was a Jubilee — debts cancelled, land returned, the whole economic order reset on a fixed clock. This site’s flagship framework asks a narrower, checkable question: does that fifty-year rhythm actually line up with anything real in the historical record?

We already audited the modern piece of that record — the 1903-2022 Shemitah cycle, published on this site with its hits and its two biggest misses disclosed. The Antiquity section never got the same treatment: 39 fifty-year snapshots running from Year 0 to 1900 AD, the largest unaudited piece of the whole backtest. Before it went anywhere near this site as content, we ran it through the same check.

The method

Every fifty-year row in the Antiquity section makes a claim — an empire consolidating, a currency debasing, a crisis landing. We checked each one against documented history. Because this file uses fixed fifty-year snapshots rather than a single claimed date, we scored it with a disclosed ±25-year tolerance, matching the file’s own granularity — a real event landing anywhere inside that window counts as a hit. That’s a looser standard than the Shemitah or Qumran audits use, and we’re saying so here rather than letting the different bar go unnoticed.

What we found

32 hits — 7 of them exact-date matches — out of 39 entries. Some of the cleanest: Diocletian’s price-control edict (claimed 300, actual 301), the Abbasid Revolution (claimed 750, exact), Charlemagne’s coronation (claimed 800, exact — Christmas Day, 800 AD), the Black Death (claimed 1350, exact), and the Bank of England’s founding (claimed 1700, actual 1694 — already confirmed independently in the Daniel 2 audit).

Four more were partial hits — real, documented events, but the label or the timing was softer than the claim: “Golden Age” attached to 650 AD when the term more properly belongs to the Abbasid era after 750; the New World’s economic impact on Spain claimed in 1500 when the real Price Revolution hit mid-to-late 1500s; the Industrial Revolution’s 1750 marker sitting on the early edge of a gradual, decades-long shift rather than a discrete event. Two more were weak calls — the 950 AD “Silver Famine” is real but loosely tied to that specific window.

What we got wrong, and fixed

One row was a genuine factual mistake, not a soft call. The 150 AD entry claimed the Antonine Plague and economic stagnation. The real plague struck 165-180 AD — fifteen to thirty years later, outside even the ±25-year window. 150 AD itself, under Antoninus Pius, is generally considered one of Rome’s more stable, prosperous stretches — the opposite of what the row claimed. That’s been corrected in the source file, along with three of the four partial findings.

This is the fourth research file we’ve run this discipline against, and the third where it turned up something real to fix — a dating error in the Shemitah file (1971 vs. 1973 for the gold standard’s end), two in the Daniel 2 Fiat Decay index, and now this one. Only Qumran Chronometrics came back clean, with its single open item flagged as honestly unverified rather than asserted as fact. Four files audited, four real errors found and fixed across three of them — not a mark against the research, but the actual proof this check is worth running before any of it becomes public content.

Why this one matters beyond the history lesson

This is the same fifty-year Foundation/Expansion/Wall/Reckoning classification now driving the live Current Macro Phase timeline on the homepage — the repeating pattern is the same one scored here, not a separate, unaudited claim bolted on afterward. Knowing the backtest catches 32 of 39 checkpoints, with the two real errors it did contain disclosed and fixed, is the actual basis for trusting where that live timeline says we stand today — not a reason to treat today’s marker as certain, but a reason it isn’t a guess either.

Read the full audit

The complete scored table — all 39 rows, every verdict, the methodology note in full — is on the Jubilee Antiquity Track Record page, corrections included, not edited out.

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This is general information about historical patterns, not financial or investment advice, and we’re not a registered investment adviser. If this kind of check is worth something to you, standing with us — one-time or as a recurring member — is what funds the next audit, not just this one.