Why Network Engineers Still Meet in Person

Every few months I pack a bag and fly to a hotel conference room near an airport, to sit in a space full of people whose entire professional purpose is making that flight unnecessary. Network engineers spend their careers building infrastructure that lets someone in one country talk to a server in another without leaving a desk. Then we book flights to go stand around with bad coffee and talk about how well that infrastructure is working. Nobody in the room seems bothered by the contradiction, and after enough years on the NOG circuit, I've mostly stopped being bothered by it too. But it's worth asking what's actually happening in that room that a video call keeps failing to reproduce.

Watch a room during a technical talk sometime, not the slides. When someone presents a routing decision or walks through a postmortem, the interesting information usually isn't in what they're saying, it's in the row of people who clearly have an opinion about it. A slight lean back at the wrong sentence. Arms crossing right when the presenter glosses over the part the whole industry has feelings about. A murmur that never makes it into a chat log, because writing something down is a far more deliberate act than a wince. None of that survives a video call. A remote audience is a wall of muted tiles or a scrolling text window, both of which flatten disagreement into either silence or a comment somebody had to decide to type.

Then there's the conversation that starts the second a talk ends, in the couple of minutes it takes everyone to file out the door. Someone taps the presenter on the shoulder before they've even left the stage and says the thing they weren't going to say into a microphone in front of three hundred people. That conversation has no agenda and no dial-in, and it wouldn't have happened if either person had needed to send a calendar invite first. The friction of scheduling a call is small but real, and it quietly filters out most of the marginal conversations that later turn out to matter. A hallway has no such filter. You bump into someone, ask the question, and get an honest half-answer because they haven't had time to compose a careful one.

What I actually care about most is watching someone answer a question they didn't prepare for. Conference talks get rehearsed, sometimes badly over-rehearsed, but the Q&A afterward is close to live. You can usually tell within fifteen seconds whether someone built the thing they're describing or just read the design doc closely enough to present it well. The hesitation gives it away. So does the specific way someone says 'I'd have to check' instead of inventing an answer, or how they handle a follow-up question they clearly didn't see coming. That's how a community calibrates who to trust on a given topic. A recorded answer, however polished, gives you none of it. Even a live video call gives a diminished version, because everyone on a call is a little more guarded, a little more aware of being watched through a lens instead of just being watched.

None of this strikes me as strictly irreplaceable, and I'd be lying if I said the industry has tried very hard to replicate it. Breakout rooms exist. Structured, unscripted Q&A over video exists. Nothing stops a conference from running an open floor discussion with cameras on and no slides, which would get you closer to a hallway than a webinar ever will. Almost nobody bothers, because the easiest format to run is one person presenting while everyone else watches muted, and that format happens to strip out exactly the parts I just described. Some of what people call irreplaceable about in-person events is really just underinvestment in the alternative.

Some of it is just habit dressed up as necessity. Travel budgets get approved because they were approved last year. People fly to the same handful of regional NOG meetings annually because that's the shape their calendar has always had, and because showing up is its own kind of credential in a fairly small world where the same few hundred people keep running into each other. I know people who go for the community and would say so honestly. I know others who go because not going would be read as a signal, which is a very different motive wearing the same boarding pass.

So I keep flying to hotel conference rooms, and I'll probably keep doing it for a while. The honest reason has less to do with human connection being unrepeatable and more to do with nobody around me bothering to build something better, myself included. It's a less flattering explanation, and probably a more accurate one.