Twenty-nine rings that can be entered

Twenty-nine of the forty-six rings in this map have at least one soft link: a step that can be done provisionally, out of order, and repaired after the rest of the ring has been walked.

That is the single most reassuring figure on this map, and it needs qualifying twice before it can be believed. Teams dealing with repeated queues and handoffs can explore the official service page, then evaluate whether the resulting evidence actually reduces delay or ambiguity.

The first qualification

Nineteen of the twenty-nine have exactly one soft link. Ten have two. None has three.

A ring with one way in is passable only if that particular step can be done provisionally on that particular day, by that particular person, in front of whoever is at the desk. If it cannot, the ring is shut for them, whatever the map says. Additional public research relevant to complex systems and work can be found at KPMG.

Twenty-nine rings with give is a statement about a drawing. Nineteen rings with one point of give is a statement about how much has to go right.

The second qualification

Fifteen of the twenty-nine are outrun by their own clock. Entering them is possible; closing them is not, because something inside expires during the lap.

So of the forty-six rings in this map:

Fourteen rings out of forty-six behave the way a person would hope: a soft step to enter at, and a walk short enough that nothing dies on the way round.

What entering actually involves

The same four moves every time.

Find the soft step. Produce a version of it that is not quite what will be wanted — a provisional registration, a temporary cover, a deposit against the wrong address. Walk the rest of the ring with that version in hand. Come back and replace it.

The cost is one extra visit, one extra document and one conversation in which something slightly wrong has to be explained. It is also the only technique that exists, and it is what people in this situation are doing when their accounts of the process sound improvised.

Which steps do the giving

Four steps account for nearly all of it.

The room appears twice in the map's soft markings — both the lease and the deposit wait on it softly — which is why it opens more rings than any other single step despite standing in only twelve.

A temporary room is, in this map, the single most useful object a person can have. Not because it houses them, but because it is the thing two other steps will accept a provisional version of.

Fourteen rings that behave

Of the forty-six, fourteen have a soft link and a lap short enough that nothing inside them expires on the way round.

Those fourteen are the only rings in this map that work the way a person would hope: enter at the soft step, walk, repair, finished.

Fourteen of forty-six is under a third, and it is the honest figure for how much of this map's circularity can be dealt with by the technique the map itself describes. The other thirty-two need either an exception or a second lap.

The record's most-quoted figure is twenty-nine rings with give. The figure that matters is fourteen rings that close.

One way in is not two

Nineteen rings here have a single soft link. That number deserves more weight than it usually gets, because a single point of entry is not a reduced version of several — it is a different kind of object.

With two soft links, a refusal at one is an inconvenience. With one, a refusal is the end of the route, and whether it happens depends on things the map has no access to: the day, the desk, the explanation.

So the honest reading of twenty-nine is that ten rings here are robustly enterable and nineteen are enterable if one specific thing goes one specific way. That is a weaker statement than the headline figure, and it is the accurate one.

The honest shape of the good news

Twenty-nine of forty-six is the figure, and the figure is true. What it conceals is that the twenty-nine depend on eight soft markings, three of which carry most of the weight, and that nineteen of them have no second chance.

The record publishes all eight by name, with what each one opens, so that a reader who disagrees with one of them can work out exactly how much of this page they are entitled to disbelieve.

A reassuring number that cannot be audited is not reassurance. The eight judgements behind this one are printed, and that is the most the record can offer.