Published basin-wide population estimates are model families sharing assumptions rather than independent measurements: Denevan himself later rejected the habitat-density method behind his influential 5.1–6.8 million figure — while still holding "at least 5 to 6 million" reasonable on other grounds.

Denevan's self-rejection is verbatim in AMZ-E009 — a decisive documented case of a number surviving the death of its own method, which is the claim's point.

The documentary record shows that the primary architect of the heavily cited 5.1-6.8 million population figure formally retracted his own habitat-density methodology, while keeping the final number based on instinct. This exposes a crucial methodological flaw in the field, demonstrating that many published demographic estimates are interlocking model artifacts rather than independent data points. The strongest opposing consideration is that the failure of one specific habitat-density model does not inherently invalidate other, mathematically independent methods (such as dark-earth scaling or documentary projection) that might arrive at similar numbers.

Denevan (2003) explicitly states he now rejects the habitat-density method used for his earlier 5.1–6.8 million estimate, while still believing “at least 5 to 6 million” is reasonable on other grounds. This shows that his influential figure and its method have parted ways. The broader statement that many published estimates share assumption families is consistent with the literature overview in the case, though not exhaustively enumerated here; the core factual point about Denevan’s self-rejection is firmly established.

AMZ-E009 is decisive on the claim as stated: Denevan rejects the habitat-density method that produced 5.1–6.8 million because habitat densities were too variable for meaningful averages, yet still believes at least 5 to 6 million reasonable. That is the documented case of a number outliving the argument that generated it, and it reframes published totals as model families rather than independent censuses. Strongest opposing consideration: retiring one scholar's method does not by itself invalidate documentary, dark-earth-scaling, or radiocarbon-proxy families, each of which must be audited on its own dependencies.

Denevan's 2003 self-rejection is verified verbatim: he abandons the habitat-density method behind the 5.1–6.8 million figure while retaining "at least 5 to 6 million" on other grounds — a documented instance of a number outliving the argument that generated it. Together with the Aquiry fivefold sensitivity (AMZ-C005), the claim that the published totals are model families rather than independent measurements is well supported by in-record examples. The strongest opposing consideration is that the full dependency graph has not been published: other families (documentary, dark-earth scaling, radiocarbon proxy) have not each been audited here, so assumption-sharing is demonstrated for the most influential cases, not proven for all. Well supported, high confidence; AMZ-R004 is the pending audit.

The Denevan half is established by verbatim self-rejection: he abandons the habitat-density method behind 5.1–6.8 million because densities varied too much to average, while retaining "at least 5 to 6 million" on other grounds (AMZ-E009). That is a clean documented instance of a number outliving its argument. The general half — that published estimates are model families sharing assumptions rather than independent measurements — is a reasonable methodological reading but is not itself demonstrated by any evidence record here; the dependency audit is proposed (AMZ-R004), not done. The strongest opposing consideration is that documentary, dark-earth-scaling and radiocarbon-proxy families do rest on genuinely different data, so the shared-assumption charge must be proved family by family.

Denevan's self-rejection is verbatim; the model-family structure follows from the estimates' own derivations.

Denevan's self-rejection is verbatim (AMZ-E009); the model-family structure follows from the estimates' own derivations.

Verified verbatim from Denevan 2003: "Consequently I now reject the habitat-density method I used in the past to estimate a Greater Amazonia population in 1492 of from 5.1 to 6.8 million… I nevertheless still believe that a total of at least 5 to 6 million is reasonable."

William Denevan (2003) explicitly published a formal retraction of the habitat-density method he had previously utilized to derive his influential 5.1 to 6.8 million contact-era population estimate, citing extreme intra-habitat density variance. The claim accurately notes both his methodological rejection and his simultaneous qualitative defense that a total of 5 to 6 million remained reasonable on alternative grounds. The strongest opposing consideration is that many regional archaeologists continue to accept the 5 to 6 million range as a broadly plausible order of magnitude despite the obsolescence of the initial mathematical derivation.

Denevan's self-rejection of the habitat-density method, quoted verbatim and verified, is decisive for the claim that basin totals are model families sharing assumptions rather than independent measurements. Strongest opposing consideration: Denevan simultaneously retains "at least 5 to 6 million" as reasonable on other grounds, so the record licenses methodological suspicion in both directions and supports no particular population total.

AMZ-E009 directly quotes Denevan rejecting the habitat-density method that generated his 5.1–6.8 million estimate because habitat densities were too variable for meaningful averaging. It also quotes his continued belief that at least five to six million remained reasonable. The strongest opposing consideration is that his retained number rests on unspecified other grounds in this record, but the claim concerns his methodological reversal rather than the number's truth.

Denevan 2003 (AMZ-E009) explicitly rejects his own habitat-density method for the 5.1–6.8 million figure while still holding at least 5–6 million reasonable on other grounds. This is decisive for the methodological claim that published basin totals are model families sharing assumptions rather than independent censuses.

AMZ-E009 is as clean as documentary evidence gets: Denevan explicitly rejects the habitat-density method behind his own 5.1–6.8 million estimate, on the stated ground of excessive within-habitat density variability, while still holding at least 5 to 6 million reasonable. The claim's second half is therefore established. The strongest opposing consideration is that the first half — that published estimates generally are model families sharing assumptions rather than independent measurements — is a generalization for which this ledger supplies one worked example plus two internally-disclosed model dependencies (AMZ-E002, AMZ-E004); it is plausible and partially evidenced, not demonstrated, and AMZ-R004 is the test.

AMZ-E009 quotes Denevan rejecting the habitat-density method behind his 5.1–6.8 million estimate on grounds of within-habitat variability, while still believing at least 5 to 6 million reasonable. Graded decisive for the methodological point.

E009 (decisive) quotes Denevan rejecting his own habitat-density method for the 5.1–6.8 million figure while still holding 5–6 million reasonable on other grounds.

E009 (decisive) quotes Denevan rejecting his habitat-density method while retaining 5–6 million as reasonable.

AMZ-E009 (decisive, supports) quotes Denevan's rejection of the habitat-density method behind his 5.1–6.8 million figure, with his continued belief that at least 5 to 6 million is reasonable.

Denevan (2003) explicitly published a rejection of his own earlier habitat-density methodology for estimating Greater Amazonia's pre-contact population (5.1–6.8 million), citing excessive micro-environmental variability, while maintaining that 5 to 6 million remained reasonable on other grounds. This methodological repudiation is directly verified. Strongest opposing consideration: While Denevan discarded his specific formula, other modeling approaches (such as radiocarbon demographic proxies) continue to yield aggregate estimates within the same order of magnitude.

Denevan's self-rejection is quoted verbatim from the natively verified paper (AMZ-E009, decisive): he rejects the habitat-density method while retaining "at least 5 to 6 million" on other grounds, and the claim captures both halves. The strongest opposing consideration would be that the retained magnitude is itself an unargued judgment — but the claim as worded asserts only the methodological fact and Denevan's residual stance.

AMZ-E009 directly quotes Denevan rejecting the habitat-density method that produced his 5.1–6.8 million estimate while still regarding at least 5–6 million as reasonable. This precisely establishes that the number's continued plausibility and the validity of its original method are separate propositions. The strongest opposing consideration is that the alternative grounds for retaining the magnitude are not tested by this record.

Denevan 2003 explicitly rejects the habitat-density method behind his earlier 5.1–6.8 million figure for excess within-habitat variability, while still holding at least 5–6 million reasonable on other grounds (AMZ-E009). The claim correctly frames basin-wide totals as model families sharing assumptions rather than independent measurements.

AMZ-E009 is as close to decisive as documentary evidence gets: Denevan in print rejecting the habitat-density method behind his own 5.1–6.8 million figure, while retaining "at least 5 to 6 million" on other grounds. The generalisation that published estimates are shared model families rather than independent measurements is further borne out by AMZ-E002 and AMZ-E004, in both of which the authors themselves state the dependency chains. The opposing consideration is that the broad generalisation across all published estimates is an editorial inference from three exemplars; the dependency-mapping work (AMZ-R004) that would substantiate it has not been done.

Denevan (2003) explicitly recants his earlier habitat-density methodology for estimating Amazonian population (5.1–6.8 million), citing excessive micro-environmental variability, while simultaneously arguing that 5–6 million remains intuitively reasonable on other grounds. The strongest opposing consideration is that Denevan's persistence in defending the headline number demonstrates that overall population totals remain anchored to broad plausibility arguments rather than unified censuses.

Denevan's self-rejection is quoted verbatim and marked decisive, and it is the cleanest documented instance of an estimate surviving its own argument's failure. The claim generalizes to 'published estimates' as model families, which the ledger's variety (habitat-density, LiDAR house-count, SPD proxy) supports, but the generalization is the assessor's structure, not a single measured fact.

AMZ-E009 quotes Denevan explicitly rejecting the habitat-density method that generated his 5.1–6.8 million estimate while separately retaining a belief that at least 5–6 million remained reasonable. The strongest opposing consideration is that his retained estimate is not independently validated merely because he continued to hold it. That is exactly the methodological distinction made by the claim.

Denevan 2003 (E009) explicitly rejects his own earlier habitat-density method for the 5.1–6.8 M figure while still regarding ≥5–6 M as reasonable on other grounds. The self-rejection is decisive for the methodological claim as stated.

E009 is decisive for the second clause. Denevan rejects the habitat-density method behind his 5.1–6.8 million figure because densities varied too much within habitats, yet he still judges 'a total of at least 5 to 6 million' reasonable. The first clause, that basin-wide estimates are model families sharing assumptions, is illustrated rather than demonstrated in the ledger. No basin-wide census exists, and the regional models carry explicit stacked assumptions (E002, E004), but the dependency audit (AMZ-R004) has not been done. The strongest opposing consideration is that some families (documentary, radiocarbon, house-count) draw on different data, so 'sharing assumptions' may overstate mutual dependence for some pairs.

AMZ-E009 is Denevan in print rejecting the habitat-density method behind his 5.1–6.8 million figure, while keeping 'at least 5 to 6 million'. That estimates share assumptions rather than measure independently is borne out where authors state their dependencies; these are disclosed here as sibling bases (AMZ-E002 on C005, AMZ-E004 on C006). A full dependency map has not been made.