I don't think I am missing Adam's point Jane, sure criminals make mistakes, but they don't take undue risks.
I have no argument with that, Rob, but what might look like a breeze to one, could look like an undue risk for another. I suspect, when we contemplate the risk we know that JB was taking, we may be measuring it against our own parameters, ie I wouldn't have risked walking along the sea-wall because it narrows in places.