When imperfect systems are good: Bluesky's lossy timelines

An airline reservation system has to be perfect (no slack in today's skies), a hotel reservation can be 98% perfect so long as there is some slack and you don't mind putting somebody up in a better room than they paid for from time to time.

A social media system doesn't need to be perfect at all. It was clear to me from the beginning that Bluesky's feeds aren't very fast, not like they are crazy slow, but if it saves money or effort it's no problem if notifications are delayed 30s.

Does the fact that an airline booking system must be perfect explain why so many flights are overbooked or cancelled?

No, overbooking is a business decision justified by the fact that, statistically, not all passengers will actually show up for their flight, and lower load factors cost money.

What is the "no show" rate?

A 2019 study of 5 European airports in 2019 had no-show rates of 14.4%: https://www.ozion-airport.com/product/comparative-analysis-n...

However, my understanding is that airlines have much more sophisticated per-flight and per-passenger models that calculate the predicted no-show factor based on the historical rates for that particular route (e.g. you're more likely to get more no-shows in business class flying from NYC to SF compared to holiday travelers with a reservation on the Florida Keys)

That blows my mind, I would expect maybe 1 or 2 passengers per plane at most. I'm trying to think of what factors would cause that many no-shows, it has to be mostly missed connections?

I can't imagine spending hundreds of dollars and just not showing up.

A friend of mine works for a Management Consultancy firm and they have full flex tickets if they miss the 8pm flight home they can take the next one or fly back the next morning. All without additional fees. So I believe business travel is the biggest factor when it comes to missed flights.

Side note: His employer is the biggest client of a major European airline.

No additional fees, but the cost of the ticket is typically sky-high. In many cases the company could purchase 3 restricted-fare tickets for less than the unrestricted fare. (And also, the consultants want to get home, they HATE staying extra nights, so they have inherent motivation to catch the original flight). You'd think that management consulting firms, you know, who are supposed to be good at optimization and reducing costs, would have figured this out.

They have figured it out, the client is paying for it.