How the panels connect

Each panel declares a short list of related panels, which is what produces the three cards near the bottom of every page. The metric counts those declarations across the whole registry.

It does not count the navigation bar, the breadcrumb, the section lists, the prev and next controls, or the full index in the footer. Every one of those is generated from the structure, so counting them would be counting the same structural fact many times over.

A generated link carries no information. It exists because a page exists, and it would exist whatever the page said. A hand placed link is a small statement that two specific panels are related, made by somebody who had read both.

Counting them together would inflate the figure by a large factor and would measure the template rather than the writing. Keeping them separate is the same instinct that keeps every other number on this board narrow.

The last tile counts the slashes in this page address and adds one. That is an upper bound on how many clicks it takes to reach from the front, not a measured path.

It is an upper bound rather than a measurement because the actual shortest route depends on which links exist, and this board deliberately does not compute that. A shortest path calculation would be genuinely interesting and would take considerably more code than the honest simple version, and the honest simple version is labelled accurately.

Panels inside a section are chained, and each chain entry stores only the address of the neighbouring panel. The label shown to you is read from that panel own heading when the page is built.

That is a small thing with a real consequence: a prev or next label cannot drift away from the page it points at, because there is no separate copy of the label to become wrong. Rename a panel and every reference to it updates on the next request.

• Whether the links are good ones. Relatedness is a judgement and no count reaches it.
• Whether any panel is well connected. A panel with three incoming links and one with none look identical in this figure.
• Whether anybody follows them. Nothing here observes a click.
• Whether more would be better. Past a certain density, related links stop being a recommendation and become wallpaper.

There is one link this board places everywhere, which is the wordmark at the top pointing at the front page. It is on every page without exception, generated rather than declared, and therefore not in the count above.

It is worth mentioning because it is the only navigational promise the board makes: whatever page you are on, the thing in the top left goes home. Everything else is arranged by section, and the section bar is the second promise.

There is a specific failure that sites like this ship constantly: a link to a page that does not exist, written when the target was planned and never updated when the plan changed.

It survives because nothing catches it. The link renders fine, the page looks correct, and the only way to find it is to click every link on every page, which nobody does after the first week.

On this board the related panel cards are rendered from the registry, so a reference to a page that does not exist simply does not draw, and the same registry is used to check every declared reference before anything is published. That is a small piece of plumbing and it is the reason a reader can follow any card here without landing on an error.