Senator SINODINOS (New South Wales) (14:24): Mr President, I ask a further supplementary question. Why did the government agree to these features of the MRRT, which the Secretary of the Treasury admits relied on things that neither Treasury nor the government could see in real time, and commit to spend the proceeds of the tax before it actually knew how much revenue the tax would raise? As the Prime Minister said that she had obviously stamped her authority on the negotiations, will the government now take responsibility for the obvious flaws in the tax which she and her Treasurer negotiated?