Concept Canon acquired at about six · never once failed to arrive

The Flinch Everyone has it. Nobody remembers learning it.

The eye slides, the attention refuses to settle, and a low unnameable anxiety arrives instead.

AcquiredAt about six years old

Taught byNobody. No law, no custom, no ceremony.

InheritedNot at all

Failure rateIt has never once failed to arrive

ExceptionsA handful of children in every generation

Felt asNot contempt — a low anxiety with no name attached

What it is like

Nobody averts their eyes out of contempt. They do it because of an anxiety they cannot name and do not enjoy examining, and people made to examine it become distressed.

No law requires any of it and no custom teaches it. It simply happens, everywhere, identically — which is precisely what unsettles people. A whole civilisation doing the same thing without ever having agreed to.

What it actually is

Behind the curtain, and known to nobody alive: the flinch is a blindness to the dark side of the universe entire. The Hour forced humanity into contact with something nothing living was ever meant to perceive, for one instant, and what humanity took away was a permanent turning-away from that whole half of things.

But the dark side only touches the perceptible world where the Hour left residue — coupled matter, shells, nodes, and the people the repulsion marked. So the residue is the only place the blindness can ever be noticed, and in practice the flinch presents as an inability to perceive what the event left behind.

Which means the Craft are unseen as a side effect rather than as a property. They are not hidden and not concealing themselves. They are standing on the far side of a universal refusal, along with everything else over there.

It also gates the node

Everyone who carries the flinch is pushed away from concentrated dead weight — not by fear and not consciously. They do not go, do not look, do not stay, and if asked will give a perfectly good reason that is not the reason.

The falloff is sharp. At city depth the effect is nil, which is why every city stands comfortably on its own ground. It bites only when you cut down toward the shell, and harder the closer you get.

What is not settled, and must not be

All of the above says what the flinch does. It says nothing about what hands it to every new child, on schedule, everywhere, three centuries after an exposure that touched only the living.

That is the world's one genuinely unexplained thing. One candidate answer exists and has been deliberately not taken, so that if we ever do take it, we take it knowingly.