1) That's a good point about beef – we hadn't realized that! 2) I can't find anything wrong with the airline methodology either (barring the fact that like ever

1) That's a good point about beef – we hadn't realized that! 2) I can't find anything wrong with the airline methodology either (barring the fact that like everything else, there are assumptions that introduce a lot of uncertainty, like average flight speed). It does seem a little low, though...