Chapter 117: Oren Was Right About the Wrong Thing

They went down on the nine hundred and ninety-eighth day, eleven of them, on the first morning the water was low enough to stand in the shallows below the narrows.

The weir was there.

That is the first thing and Leon is not going to pretend it was a small thing. Sixty courses of stone laid by hand under water by people who could not see what they were doing, through a whole wet and a flood that moved trees, and it was there, in a line, where they had put it.

The clay face was better than when they had left it. Tighter, smoother, greyer, packed into the joints in a way no hand could have done, exactly as two little walls in a side channel had said it would be six months earlier.

Oren went along the whole upstream face on his knees in the shallows with his hands on it and did not say anything for about a quarter of an hour.

Then he stood up and looked at Leon and gave him about four seconds of eye contact, which from Oren is an embrace, and went and did the next thing.

Which was to walk round to the other side.

***

The hole is about four paces long and it is at the foot of the downstream face and it is deep enough that a man of Oren's height standing in it is wet to the chest.

There was nothing there in the autumn. Leon walked that ground.

Nobody said anything for a while, and then Kel, who had been carried down and set on a rock and who therefore had the best view of anybody, said the thing everybody was thinking.

"The water dug it."

***

It took Leon about ten minutes to understand what he had done and the ten minutes were not pleasant.

Water going over a weir does not stop when it lands. It falls, and where it lands it is moving downward and hard, and it takes the bed out from under itself and keeps taking it, and it goes on doing that every day of every flood for ever.

You fix it before you build. You lay a bed of large stone downstream of the structure — an apron — so that the falling water lands on rock that is too big to move, and the hole it wants to dig gets dug in something that will not dig.

He knows this. He has known it since he was twenty. It is not obscure and it is not advanced and it is in every book that has ever mentioned a weir.

And it did not once cross his mind in eleven months, because he had spent eleven months thinking about the upstream face.

"Say it out loud," Doran said, on the bank, with the hide out.

Leon said it out loud.

"I forgot the downstream side. Not disagreed about it. Forgot it. I built the argument that mattered, won it, and then stopped thinking about the structure."

Doran wrote that down in Leon's own words, which is the arrangement, and which Leon asked for two years ago and has regretted asking for on about nine separate occasions.

***

Oren did not say I told you.

He could have. He had stood on that bank in the third week and said, about the downstream face, that it is the face the water comes off and that water coming off a thing is what tears it up.

He was right. He was right about the wrong thing, because he wanted to put the clay there, and clay there would have been taken off in the first flood and would have made no difference to the hole at all.

Two people, one right instinct, one right mechanism, and neither of them had both halves.

Leon put that in the register as its own line because he thinks it is the most useful sentence in the whole two years.

Oren knew where the danger was and had the wrong answer. I had the right answer and did not know there was a second danger. Neither of us could have built this alone and both of us thought we could.

Oren read it, eventually, with Kiri reading it to him.

He thought about it for a bit.

"Put my name first."

***

Fel came down four days later, at seventy-three, which took most of a morning and two people and a chair somebody made out of a hurdle.

They had been arguing for four days about how to tell him.

There were three positions. Tell him it is fine, because he is seventy-three. Tell him nothing until they know how fast it is going. And Doran's, which won, and which he did not have to argue very hard for in that settlement any more.

"He asked for it for fifty-two years. He gets the true number like everybody else."

So they told him, standing in the shallows, with the hole in front of him.

He looked at it for a long time.

He walked down to the edge of it and put his stick in and felt about, twice, and had to be steadied, and did the thing with his mouth that old men do when they are not going to say the first thing that occurs to them.

"How long has it got?"

"We do not know," Leon said. "That is the whole of the answer. It is four paces long and it is chest-deep and there was nothing there in the autumn, and until we know whether it is still getting deeper we do not know anything."

"Then you will find out."

"Ei."

"And if it is still going?"

"Then we lay stone in it, and we do it at the next low water, and it is nineteen people and about eleven days and not another sixty." Leon crouched at the edge of it. "It is a bad afternoon. It is not a bad weir."

***

Fel took that better than anybody had expected and it was Veya, afterwards, who explained why, and Leon should have worked it out himself.

"He has been waiting fifty-two years for a thing that never got started."

"Ei."

"He has never once in his life had the problem of a weir that is standing." She turned the cord over. "You have just told him the weir is standing and has a fault in it and the fault has a name and somebody will fix it next year. There is nothing in that sentence he has ever had before."

Leon walked down again on his own that evening, at dusk, and stood on the eastern shoulder and looked at four paces of dark water at the foot of sixty courses of stone.

I would have found this in a book. In eleven minutes, in a library, at twenty-two, with a coffee.

And I did not find it here in eleven months, with the whole of a settlement's food riding on it, because I was pleased with myself about the clay.

He wrote that down too.

Then he added the part that has actually stayed with him, which took him another hour and which is not about the weir at all.

Everything I know is going to come out of me in the wrong order and with holes in it, for the rest of my life, and there is no version where I catch them all.

Which means the only real work is making a place where somebody else finds them.

That is not modesty. That is the whole of the engineering.