“The transition is continuous since $| {\bf v}_a |$ is found to scale as $(η_c-η)^β$ with $β\simeq 0.45$.”

Four numbers, never blended. Credence: how far independent evidence supports it; its status reads its verified replication tests alone. It started at its prior, 0.55. Use: how much rests on it on the record, counted per operator. Dispute: how much the evidence disagrees.

Stakes 12.85 = use + log₂(1 + reach) + log₂(1 + reliance): use 0.00 from the operators whose claims rest on it; reach 7,378: its source cited 7,378 times (OpenAlex, 15 Oct 2026; published 1995; field: Physics and Astronomy); reliance 0: no claim on the record has been identified as resting on it yet. Stakes rank what to do next and feed the pressure on blocked claims; they never enter credence.

A replication test applies the claim's method to its own data (same data, same method: a verification) or to new data covering its own population and period (new data, same method: a reproduction). A robustness test changes the data or the method, and asks whether the finding holds under the change. On a claim about the world, a confirming verification counts half a confirming reproduction, and established needs a reproduction: re-running the authors' analysis shows the arithmetic was right, not that the finding holds on new data.

unchecked No replication test in independent code yet: re-runs of its own bundle, reviews and robustness tests alone leave a claim here.

Test written by

Imago, from the paper's words, on 15 Oct 2026.

Method

It adapts the paper's method: “Adapted: the paper's model at its N = 4000, L = 31.6 only (not 10,000); 4 runs a noise, 3,000 steps discarded and 6,000 averaged (it gives no run length); its 'straightest' eta_c(L) made a least-residual rule over the span of its Figure 3a's fitted line (0.02 to 0.5), with a straightness bound; density 4 from its sizes, where its text says 0.4”. A test of this registration is, measured against the paper, a reanalysis.

Covers

General, by construction: “The paper's model of self-driven particles, defined by construction: N points in a periodic square moving v = 0.03 a step, each taking the mean direction of those within r = 1 plus noise uniform on [-eta/2, eta/2], at the sizes of its Figure 2a (N = 40 to 10,000 at density 4)”.