Subsets, Not People
Every figure in this record counts combinations of met and unmet items. None of them counts anybody. The distinction is the most important thing on the site.
Reference
Limits
What the arithmetic cannot say
Every figure here counts subsets. None of them counts people.
Part six
8 notes in this part
The Assumption That Items Are Separate
Real lists contain items that travel together. The record counts them as separate coins, which is a known and stated error with a known direction.
Analysis
Nothing Here Says The Items Are Equally Likely
The second half of the coin convention, which is more often misread than the first. Counting profiles equally is not the same as believing they occur equally.
Reference
What The Median Shape Does And Does Not Mean
The median of the four hundred and five shapes admits one profile in thirty-nine. It is on the front page, and it is the figure most likely to be misquoted.
Analysis
One Hundred And Fifty-Two Shapes Under One Per Cent
More than a third of the shapes in this record admit less than one profile in a hundred. The distribution of intakes across the whole table, and how to read it.
Reference
A Filter Is Not A Description
A list of requirements is asked to describe the work and to select among candidates. The two jobs pull opposite ways, and the arithmetic shows how far.
Analysis
What Lies Outside Eight And Eight
Three kinds of filter this record does not describe, listed so that its silence about them is not mistaken for a claim.
Reference
What This Record Will Not Tell You
The closing note. What was invented, what was computed, what is deliberately absent and why, and the three figures worth carrying away.
Analysis