Hole Four

Twenty-eight people worked on the fence across three days, May 30 and 31 and June 6, coming and going in shifts. Scouts and dads from the troop, friends from school, my family. A few Eagles from Troop 314, now in their thirties, drove back to help someone else finish what they had finished years ago. I had a sign-up sheet, a materials list, a gas auger, and a design approved by both the school and the troop. On hole four, the auger hit a metal rod.

Nobody knew it was there. It appeared on no plan I had been given, and my CAD model had treated the site as a clean plane. I've written before that lost knowledge is usually lost boringly, that most of it just stops being written down. Someone buried a rod and never mentioned it again. I had not expected to find a piece of that with a gas auger.

So we stopped. Mr. Campbell worked out the fix before I did: sink the post shallower than spec, bridge it to its neighbors with an extra beam, and let them take the load. He showed up all three days with a truck full of woodworking tools and two returning Eagles, his son Michael and Ryan Burkhardt.

In Part 1 I argued that Roman aqueducts held because the system demanded it, not because any individual engineer was a genius. Hole four is that argument at one-thousandth scale. The post is too shallow to stand on its own. It stands because the posts on either side refuse to let it fall. The firmitas is in the line, not in the member.

I also described fabrica as the knowledge that lives in the hands. What surprised me was how much of that weekend's fabrica lived in hands that were not mine. An Eagle project gets judged on planning and leadership as much as on the finished object, which is fortunate, because the best work on that site was done by men who had been building things since before I was born.

Vitruvius wants an architect to have fabrica and ratiocinatio both. Men who rely on reasoning alone, he says, umbram non rem persecuti videntur, they seem to have chased the shadow instead of the thing. Running a build asks for a third thing that sits between them. You need enough fabrica to recognize it in someone else's hands and enough ratiocinatio to know where it needs to go next. You also need to be willing to put the auger down and say the drawing was wrong.

There's a word from Part 1 I left alone. I wrote about firmitas and utilitas, soundness and usefulness, and skipped venustas, beauty, on the assumption that a deer fence had no use for it.

By Sunday afternoon it was 99 degrees and North Carolina humid. I had earned a literal red neck through a heroic quantity of sunscreen, and I was tired enough that screaming seemed like a live option. Then I walked back and looked at the thing. It was straight. Apart from hole four, it matched the drawing. Venustas isn't decoration for Vitruvius; he ties it to proportion, the parts agreeing with one another and with the whole, and proportion is the one quality you cannot evaluate up close. I had spent two days with my face against a post.

We came back the following Saturday to finish. That morning one of the returning Eagles pushed up his sleeve to show a tattoo on his deltoid, his Eagle date rendered as a row of numbers. Mr. Parsons, one of the troop dads, studied it for roughly one second.

"That your Eagle date," he asked, "or your prison number?"

Nobody worked for a while after that. I've spent a lot of this blog on the question of how people keep what matters to them: papyrus, bronze gears, proofs copied by hand. The deltoid was new to me. The medium carries risks.

A review board had to sign off on the fence before it was permitted to exist. I've since sat through one of my own, so I'm an Eagle Scout now. The fence's review is ongoing and the deer are conducting it. Nothing has gotten in yet, though a summer garden is a soft test. Deer get serious once the woods stop feeding them. The real inspection happens in winter, nightly, by something hungry, with no committee involved.

Back in January I wrote that tools outlive the theories that produced them. I did not expect to build a demonstration. Some middle schooler will walk past that fence to reach the garden beds and know nothing about Vitruvius or the rod under hole four, which is fine. Half the men who built it learned how from someone whose name they've long since forgotten. A fence doesn't require understanding. It requires holding.