That or the proliferation of ever larger numbers of large aircraft has kept us in the usual homeostatic situation, but with an ever-larger (growing) pool, so th

That or the proliferation of ever larger numbers of large aircraft has kept us in the usual homeostatic situation, but with an ever-larger (growing) pool, so that the lives sacrificed in order to restore full attention to safety go much further, over many more aircraft. Only once you've hit max airliners can you judge whether homeostasis has been eluded. Until then, increasing safety is most likely just one more consequence of increased economic scale (and concomitant efficiency), rather an independent change. Same with the price of the tires.