I think that although it was in many ways a terrible and tragic accident, there was also a strong suggestion of possible criminal negligence surrounding the whole Summerland disaster, and there would surely have been the possibility of lawsuits if it had happened today. There was very little accountability in the IOM then (or now even) and I think that the current 'memorial' stone, little more than a bootjack and footscraper, hidden away in the garden at the bottom of Summerhill, could be seen to say a lot about the wish, by certain parties, to make the whole thing go away. Arguably, they even conned many of the public into an unwitting act of collective amnesia. On a positive note, it's nice to see that they're finally doing the right thing.