A lot of us who have the experience of fighting the 2011 referundum and trying to articulate a case that people would understand about moving from Part 3 to Part 4 of the Government of Wales Act are slightly seared by the experience, and the question of whether or not we should change the internal configuration of the Assembly is not, I would suggest, a matter of principle, just as there hasn't been a referendum on whether the number of MPs should be reduced.