Finally, there were the points around Tīwai and aluminium. Again, I did canvass this before the break, but the point that I was making is that the marginal price here—even if the price was to double to $50 a tonne—is tiny in comparison to other fluctuations like, in the smelter's case, the transmission pricing review or, frankly, currency fluctuations, which are many orders of magnitude more significant than this. We had a whole conversation there about profit versus revenue and so on and so forth, but it is a very marginal cost.