Scotland Bill

Perhaps I might get the politics of this right. The proposal is that we absolutely have to get this Bill on the statute book before the Scottish elections but, come those elections, we will be able to say that there is another Bill coming down the track to deal with these matters, and we may or may not have the detail on that. Is that not going to defeat the object? Was not the position of both Front Benches earlier this afternoon that we had to deliver the vow and say that we had delivered it? If another piece of primary legislation is coming and as yet we do not know what it is going to say, does that not undermine the whole strategy?