The late George Harrison once told me that Ayrton Senna's fatal accident was 'like a raindrop on a lotus leaf', meaning that the Brazilian's front wheel striking his helmet was a matter of pure chance.
Robert Kubica's accident in Montreal was the biggest we've seen in many years, and we can all be thankful that the raindrop fell the right way - the whole sport and not just the BMW Sauber driver had a very fortunate escape last Sunday.
By the end of the race the word had gone round the paddock that he had got away with a broken leg, the result of an erroneous report to race control from a circuit doctor (not the FIA's own Gary Hartstein, who had returned to track duty in the medical car).