i think most of us are missing the point,
the most important point is security and if a potential highjacker can come aboard with a knife or any other weapon, having four or two engines becomes irrelevant.
and i also believe the best way to make sure that money grabbing airlines who put profit before safety should be named and shamed.
perhaps one way is to have someone internally or from the govt. to test security on various airlines and penalise airlines that fail tests.
we cannot let another world trade centre
happen anywhere again!!!!!!!!!!