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What A Board Lets You Ask

Fifty notes on what a board of listings lets you ask

Limits

What this record cannot say

Stated at the top, not buried at the bottom.

two conventions

8 notes in this part

The Two Things That Were Decided

A schema is only its facet sizes, and a query sets each facet to one value or leaves it alone. Everything else in this record was counted rather than chosen.

Reference

If A Filter Lets You Tick Several

Ticking several values at once changes the question count from a product of k plus one to a product of two to the k, minus one.

Analysis

Structures, Not People

The record counts cells and queries. It does not count listings, readers, searches or outcomes, and every figure here is silent about all four.

Analysis

Cells With Nothing In Them

A board can express far more questions than it can answer. The record counts the first, and the gap between them grows with every filter added.

Analysis

The Box That Is Not A Filter

A search field has no fixed set of values, so it is not a facet and none of this arithmetic applies to it. What it does instead is worth being precise about.

Analysis

Boards Past The Edge Of The Record

Filters with dozens of options, more than six filters, dependent filters and ordered ranges. What the method still handles, and the one structure it does not.

Reference

One Line A Board Could Publish

Two numbers, printed next to the filter panel, would tell every reader exactly what the board can and cannot separate. It costs a line and gives up nothing.

Analysis

What This Record Will Not Tell You

The closing note. What was decided, what was counted, what is deliberately absent, and the three figures worth carrying away from fifty pages.

Analysis