Originally Posted by
KeyPilot
What a load of rubbish!
The smallest number is zero; multiply the biggest number (infinity) by this, and you get - zero!
A better rule of thumb might be "if you multiply a small number by a big number, you get a medium-sized number".
Pedantry at its finest. As it happens, the fuel savings by OETD, OETA, Config 3 etc. certainly aren't rubbish. Ask the bean counters - and every major airline that does this as a matter of course.