Surveys. We take em, we send em out, we pour over the data and make decisions based on what we think the people want.
You can conclude 86% of people keep a seat belt fastened during a flight, yeah, ok. But what about the 24% of the people who take the seat with them to the bathroom? Who are these people? Do 24% of all flyers get on the plane, buckle up and unbuckle only after the flight comes to the gate and the pilot has turned off the seatbelt sign? Really?
My (overly sarcastic) observation is you need to use care when you draft those survey questions so you don’t end up with 4 out of 5 dentists wishing they were the fifth one.