Recorded in the Shimmering Expanse Conducted by an unnamed scholar My own notes, made at the time, are in brackets.

Opening: The Impossible Speed

Scholar: A Saltmarch courier gets from the Expanse to the Still Ring Basin in three days. It should take two weeks. How?

(He had a flask and two cups with him, and he filled mine before he answered, although I had not asked.)

Kael: Who told you three?

(He seemed genuinely to want the answer, so I told him.)

Kael: They were being kind. Last autumn I did it in two.

(Only then did he pour his own.)

Every House claims speed and most of them have earned some of it. Ironvale rides hard, good horses, disciplined rotation. Vaulin runs relays through the Groves, root to root. Sablemire will not tell you how they do anything and they are never late.

None of them is fast in the way this is.

Scholar: Then in what way is it?

Kael: Here is the first part, and you can have it for nothing. Distance is not what you think it is. The world has folds in it, places where two points that look a fortnight apart are close together, if you go through the crease rather than round the outside.

The Expanse taught us. Out there you can see a canyon three days off, and then look again and it is behind you. The desert lies, and it lies well. Reality is thin in that heat and the space between here and there becomes negotiable.

Most people call that mirage and sunstroke.

The Source Beneath Reality

Scholar: You are not simply observing the mirages. You are using them. Using them how?

Kael: Have you had it explained what a practitioner is, or shall I do it badly for a minute?

(He did not wait for me to answer.)

Kael: We are apertures, and the power was never ours to hold. Glimmers, which we call resonance points, connect us to the source planes: Fire, Water, Earth, Air, Light and Darkness. When you draw, you are reaching through yourself into somewhere that is not here.

Most practitioners treat that like a well. Reach down, pull up what you need, and the well stays where it is and you stay where you are.

Scholar: And Saltmarch does not?

(He drew in the dust with one finger as he explained, circles joined by lines.)

Kael: The planes are close by, underneath us, pressed up against this the way silk sits against skin. And in some places, where the world took a wound, or where the boundary was always poor, you can feel both at once.

The Expanse is full of those. We grow up walking on ground that is half here. So we go through the door instead of reaching through it, and on the other side, distance stops being the same problem.

Navigation Without Direction

Scholar: You walk into the source plane itself. How does anyone navigate a plane of primordial energy?

(He laughed.)

Kael: Not the Fire plane, if that is what you are picturing. I would be ash in three steps and I would deserve it.

You go into the source you are already tuned to. Fire-touched cannot step into Water. Earth cannot navigate Air. You go where your nature lets you and nowhere else.

I am Air, which is breath and movement, so I step into Air.

Scholar: And once inside, you walk?

(He turned his cup a half-turn on the stone without drinking from it.)

Kael: Walking is the wrong word for it, and you know that or you would not have asked it that way. The planes have no geography, no north or south, no three miles that way, and Air has no landmarks at all. It is current, pressure and movement, and none of it is arranged for the convenience of somebody with eyes.

What we worked out, living where the boundary is poor, is that the planes sit underneath physical space and are tangled into it. And everywhere the world has a thin place, there is a door.

Think of the Heartlands as cloth, with Air underneath it, and hundreds of small holes worked through. Every hole is somewhere Air and the world touch.

Most practitioners stand at a hole and reach down through it for power. I go through it, and then I navigate until I find a different hole that comes out three hundred miles away.

Scholar: That sounds like the hard part would be getting in.

Kael: The stepping through is easy enough. Any Intent practitioner with control can push into their own source if they are desperate enough or foolish enough. The difficulty is coming out where you meant to.

That is what this House trains, reading Air far more than using it. Thin places resonate through the source plane, and each one has its own signature. The Still Ring Basin does not feel like the Turtle-Groves, and neither of them feels like the bayous.

You learn them the way a musician learns intervals, and then you follow them home.

The Dangers of Getting Lost

Scholar: What happens when a courier comes out somewhere else?

(He picked up the flask, found my cup was still full, and put it down again.)

Kael: I have three stories about that, and none of them are funny.

(He had been joking until then, and he stopped.)

Kael: Sometimes they come out in the wrong place in the wrong week. Somebody stumbles through a thin place in the deep desert a hundred miles off, dehydrated, confused and alive, and cannot say how long they were inside.

Sometimes they do not come out.

The planes are primordial. They were never arranged with us in mind. Air does not distinguish between the wind that fills your lungs and the wind that takes you apart and puts you on four different currents. Stay too long, lose your hold on what you are, and you go into it. You become some of the source.

We have lost couriers that way. Not many, and every child in this House knows their names. We make sure of that.

Scholar: How do you guard against it?

Kael: The training is slow and careful. I will tell you all of it, because the caution is the useful part.

We grow up in thin places. The Expanse is the training ground because reality is already poor there and you do not have to force anything. Children learn the difference between solid ground and thin ground years before their glimmers do anything. It is instinct before it is technique.

Scholar: And once they can draw?

Kael: We listen before we move. When a Saltmarch practitioner comes to Intent and can draw properly, they do not step through. They sit at thin places for months, sometimes years, feeling for distant doors and going nowhere at all. They learn what the Basin sounds like from three hundred miles off, what the Groves feel like, and what Ironvale's void-touched frequencies do.

We call it learning the map that is not a map.

Scholar: When do they make a first crossing?

Kael: At Intent, and never alone. An experienced courier goes in with you holding a tether, which is a harmonic link between your two frequencies and has nothing to do with rope. If you drift, they pull. If you panic, they anchor you and take you to the nearest exit, which is frequently not the one you wanted.

Nobody goes alone before a dozen tethered crossings. The short ones come first, the Expanse to the Boundary Lands at fifty miles, then the Basin at two hundred, then Sablemire, three hundred and change, right across the Dominion.

And every time you are memorising, though not with your mind, because minds do not work properly in there. You memorise with your glimmers, learning which current feels like which door.

Scholar: Does everyone who begins finish?

(He turned the cup again.)

Kael: Some of them stop. Some apprentices step through on a fifth tethered crossing and freeze. The resonance takes them and they cannot find the thread back, and the courier with them has to drag them out.

Afterwards they are finished. They can still draw on Air and do all the other work the House needs. They will not cross again.

I have sat with four of them in the week after, and I would do it again.

I would not call that failure, incidentally. It is a person who found out where their limit was while somebody was holding the other end of a tether. The ones who never find the limit, who go past being frightened and into thinking they cannot be caught out, are the ones who do not come back.

(He stood up and shook his shoulders out.)

Kael: But the ones who can do it feel direction in a place with no direction, and ride breath and pressure until the right frequency comes up ahead of them like a bell through fog.

And we are fast, faster than horses or ships or anything else that has agreed to obey distance.

The Code as Protection

Scholar: You carry physical objects through. What happens to them in there?

(He went still.)

Kael: Ah. You have got to the actual question, and it took you less time than it takes most.

(He took a sealed letter out of his satchel, which was worn leather reinforced at the seams, and held it up.)

Kael: This is parchment, ink and wax. It comes with me, though it does not stay solid in the way you are imagining.

Matter can exist in the source planes, though it is neither stable there nor safe. Fire would burn it. Water would take it apart. Earth would turn it to stone. Air would scatter it, parchment fibres onto four different currents, ink into particles, wax into mist.

Unless what you are carrying is true.

(He put the letter down on the stone between us and did not pick it up again for some time.)

Scholar: True in what sense?

Kael: The Code is more than decoration, and more than a nice sentiment we say at funerals. When I accept a message, when I seal it and speak the acceptance, I am doing a great deal more than agreeing to carry an object. I am binding myself to it being what it is said to be. That binding goes through my glimmers and through the whole of me.

And the binding is what holds it together in there. It stays whole because I have sworn it is whole. Air does not scatter it because I have claimed it as true matter rather than as debris.

It works for packages too, documents and tokens and small objects. If I have accepted it and bound myself to it arriving intact, it arrives.

Scholar: Whatever it is?

(Now he picked the letter up.)

Kael: Only if the thing is actually true. Take a forged letter, or a falsified document, or a message claiming to come from somebody it did not. The moment I step through, the binding fails to take, and the false thing goes to pieces the way false things do.

So when a message arrives in a Saltmarch satchel, you know it is genuine as well as quick.

(He nearly made a joke here, and did not.)

Kael: We cannot carry a lie. That is a matter of honour, and it is also a plain physical fact. The plane would shred it, and we would arrive holding nothing and having to explain why.

Scholar: And you? Does it hold you together too?

Kael: I am still here after a few hundred crossings, so something is working.

It extends to the carrier, yes, and not perfectly. Stay in too long and the Code will not save you from going into the current with everything else. For the length of a crossing, minutes, an hour if the route is complicated, it holds you coherent.

You are, for that stretch, a true thing moving through somewhere with no patience for anything else. Mostly it feels like holding your breath.

(He put the letter away.)

Kael: That is why we ask so many questions before we accept anything, and why we verify. Once it is in the satchel and I have said the words, I am bound to it, and if somebody has lied to me about what it is then I find out three hundred miles into a place that will not care.

It is funny that the desert House ended up as the honest one. Everyone says so.

(A pause.)

Kael: It is not that funny. It is the reason any of us are alive.

Multiple Sources, Multiple Routes

Scholar: Different sources must have different doors. Does that mean different routes?

Kael: Different everything.

(He crouched and started a new pattern in the dust, several overlapping.)

Kael: Every plane has its own web of thin places, and they do not sit on top of each other, not remotely.

Air's doors cluster where wind runs hard through a narrow place, in mountain passes, on coastal cliffs, and in open desert with nothing between the ground and the sky. Water's are somewhere else entirely: river confluences, deep lakes, the Sablemire bayous where mist comes up every dawn without fail.

Fire finds doors near forges and old burns and vents. Earth in deep stone and caverns, anywhere with patience and pressure in it. Light where something was revealed. Darkness where something stayed hidden and kept its options.

Scholar: So each courier has routes they are suited to.

Kael: So we need couriers on every source, and we have them. I can reach the Basin easily, because wind howls through that valley all year. Ironvale is better still, void-touched wind, thin reality, clean current.

The deep bayous I am poor at. There are Air-doors down there and they are sluggish and hard to read. A Water-touched courier does that route in half my time, surfacing near every river and marsh on the way.

The Groves want Earth-touched. The Whispering Deep wants Darkness, and they find doors down there I cannot feel at all.

Scholar: And a practitioner connected to more than one?

(He grinned, and for once it was the uncomplicated kind.)

Kael: Now that is the good question, and you saved it, which I notice.

They are rare. Most souls hold one frequency cleanly and maybe a weak second with a great deal of work. They exist, and they can do a thing the rest of us cannot.

A courier with Air and Water can cross by whichever plane suits the journey. Or, and this wants Mastery at minimum, and I have never attempted it, they can change mid-crossing. Enter through Air, navigate until a strong Water-door comes up nearby, shift their frequency and step sideways between planes, and go on through Water to an exit no Air-touched courier could reach. We call that bridging.

Scholar: It sounds hazardous.

Kael: Picture navigating Air, which has already got no direction in it, and then changing your soul's resonance to something else while you are inside. Lose coherence for a moment during the shift, or fail to hold both frequencies at the join, and you come apart between them.

I have known three who could bridge and mean it. One was at Presence, and she made it look easy. The other two are at Mastery and they only bridge when a message will not keep, which is roughly twice a year between them.

Scholar: And yourself?

Kael: Me, I am Air and nothing else, and I know it. I can feel Water-doors when I am near one. They hum like the same note on a different instrument. I cannot use them.

So I know Air. Every door between the Expanse and the Basin, the Basin and Ironvale, Ironvale to the Groves, the Groves to Sablemire. Which currents run clean, which are rough, and how it all shifts from the spring wind to the autumn. It does shift, and it catches people out.

That is enough. Saltmarch does not need everybody bridging. It needs the routes covered, and between us they are.

Closing

Scholar: Thank you. You have been more open than I expected.

(He collected the two cups. Mine was still full, and he did not remark on it.)

Kael: Openness in this House is less a generosity than the operating condition. The Code does not leave me the option of lying, so I may as well be pleasant about it.

(He checked the seal on his satchel without seeming to notice he had done it.)

Kael: You asked what it costs. Most people ask how fast and stop there.

If you ever need something carried, you know who to ask, and you will know it arrived as you sent it.

The desert lies, scholar. It lies beautifully and it does it all day. What we carry is true.

Summary of Techniques Revealed

1. Source-plane transit. Stepping bodily through a thin place into the source plane a practitioner is tuned to, rather than only drawing from it, and leaving by a different thin place elsewhere. You can only enter your own source.

1. Resonance navigation. Thin places carry distinct signatures readable from inside a directionless plane. Learned by sitting at doors for months or years before ever crossing.

1. The Code as binding. Acceptance of a message binds the courier to its truth, and that binding is what keeps both cargo and carrier coherent in the crossing. It does not take on anything false, which is why a forgery cannot be carried at all.

1. Tethered training. A harmonic link held by an experienced courier during early crossings. Twelve tethered crossings at increasing distance before anyone goes alone.

1. Bridging. Changing resonance mid-crossing to move between planes and reach exits otherwise unavailable. Mastery minimum. Failure at the join is dissolution. Three known practitioners.

1. Source coverage. Each plane's doors cluster in different terrain, so the House trains couriers across all six and routes work by source rather than by distance.

He filled my cup before I asked and never refilled his own. I think the pouring gave him time to decide what to say. He made the joke about the desert House being the honest one and took it back almost at once, and he is the only person in these five interviews I have seen correct himself toward being more serious.