B: "That's not a bug, that's a feature. There is an emergency
exit door built around the window behind you, and the route has to
be kept clear."
A: "Oh. Then it's a misfeature; they should have increased the
spacing between rows here."
B: "Yes. But if they'd increased spacing in only one section it
would have been a wart -- they would've had to make
nonstandard-length ceiling panels to fit over the displaced
seats."
A: "A miswart, actually. If they increased spacing throughout
they'd lose several rows and a chunk out of the profit margin. So
unequal spacing would actually be the Right Thing."