It's circular logic. They're basically saying that there exists a low enough speed that could have theoretically prevented this. Whether any reasonable person

It's circular logic. They're basically saying that there exists a low enough speed that could have theoretically prevented this. Whether any reasonable person would have been going that speed is another story. Crashes would be a lot less common if vehicles couldn't travel faster than 20mph. Car crashes would cease to exist if vehicles couldn't move at all.