It may involve observer bias, so that I’m seeing more cheerful flight attendants because I expect to see flight attendants who are more cheerful. Hand on his chest, he proclaimed, “I’ve never in 30 years in this job …” He repeated this several times over the course of the flight, each time speaking to a different flight attendant. Again, I handed over the chocolates – this time quite a large bag, since it’s such a big plane – but this time the flight attendant asked me whether I was a flight attendant too.