they seem to be able to land on their feet when bad circumstances occur." Someone also said that the luck of the Irish is because "Irish people have come through such overwhelming adversity and have come out on top, and kicking! It must be luck".
So these two concept aren't too far away from eachother, they are both coined on a strong will to be determined.
The Luck of the Irish has now spread further, and people generally belief we are slightly luckier ;) Well then there's definitely something wrong with my Irish 'lucky' gene! No harm in hoping though.
I will go as far to say that we are a very resilient race, I will agree that much. To quote a humerous stereotype a man said to me yesterday... "God invented whiskey to keep the Irish from ruling the world".