3 ms·

Quote: Anyone who’s been to an airport can say that it’s operating at maybe Two Sigma,” he marvels. “That’s making a mistake 30 percent of the time.” Is that r

• vkou 10y ago
  Having been to a few airports, I can say with a fair degree of certainty that they are not making a mistake 30% of the time. Airplanes don't run out of fuel mid-flight, or crash 30% of the time, my luggage doesn't fail to arrive to its destination 30% of the time, and I've yet to show up to a flight, only to discover that my seat in just a hole in the floor. Now, the flight attendants misunderstand my choice of mid-flight snack ~30% of the time, but that doesn't really matter, because it's always ~12 grams of peanut-related animal feed, anyways.
  • giarc 10y ago
    A plane not pulling away from the gate on time is likely considered a mistake. Bags not arriving to the carousel in 15 minutes is likely considered a mistake. It's not always binary like "Did the bag get lost or not?"
• kinkrtyavimoodh 10y ago
  The sigma level in industry traditionally refers to the 'bandwidth', not the distance from the mean, so what you are thinking as 1 sigma is actually 2 sigma. https://en.wikipedia.org/wiki/Six_Sigma https://en.wikipedia.org/wiki/Six_Sigma
  • danielvf 10y ago
    Thanks!