I will say two things in response to the hon. Gentleman. First, he seeks and perhaps over-generously expects from me a degree of reassurance and
even of wisdom that it is not within the capacity of the Chair to provide. Secondly, in asking how we—meaning the House as a whole—can be sure, I simply say that the hon. Gentleman, who is no stranger to these matters, raises something of a philosophical question. Whether, when and to what degree Members can be confident of certainty are not matters that can be broached now from the Chair. However, in so far as he was seeking—as the puckish grin on his face suggests—to register his own concerns, he has found his own salvation.