Luck always comes into survival of the fittest. Often it isn't the
fittest, but the luckiest who survive. But how many relatively minor
wounds became gangrenous and eventually killed the host because basic
first aid wasn't carried out, like washing and bandaging? On the other
hand, we have true stories of farm workers carrying their severed arms
to a doctor after being crushed by a tractor or combine, and they live
to tell the tale.

MM

Or being a 15 year old and having your arm, (and a bit of the surf board),
bitten off by a Shark and to lay on the surf board and paddle back to the
shore using her other arm!!

Mike