Originally Posted by JonNYC
Here's some info and corections (the corrections of my guesses as well!)
Great update, thanks!
In the final analyis, going flat is all the rage, but every bit of data AA collected suggested that was not most important and the blind ergonomic studies we conducted literally had respondents generally rating fully flat geometries no better than angled seats, BA marketing spin notwithstanding.
Huh?

A
blind study of flat-horizontal vs. flat-angled?
"Here, we're going to put an eye-mask on you, put you in two different seats,
not tell you which one is horizontal and which one is angled, and we want you to tell us which you prefer."