pub const EFFECT_NOISE_RATIO: f64 = 2.0;Expand description
How many times the raw-versus-gglib effect must exceed the A/A drift before the report will call it more than noise.
§This is a rule of thumb, not a test
A single A/A pair estimates the drift from one degree of freedom. Two draws
of a noisy quantity can land close together by luck, and a factor derived
from them carries no confidence level, no p, and no power. 2.0 is chosen
because it is the smallest factor at which the two numbers are plainly not
the same size — enough to stop a delta that is within its own noise from
being reported as a finding, and not enough to license the word
“significant” about one that clears it.
The honest way to strengthen this is more A/A pairs, not a bigger factor.