And that is why I have not pursued that particular line of argument, because it becomes a battle of experts. As a lawyer--I've been to court--you can get experts who will say whatever can be said. You're not going to have that clarity of purpose.
I fall back on what I think should be common sense. To me, following Mr. Ouellet's observation, if I'm out shovelling snow and come back in and two hours later I'm dead on the floor, at my age you might conclude there's a connection. When it's seconds or minutes from use to death, without any evidence, I will operate on the assumption that there may in fact be a connection.