Senator CORMANN (Western Australia) (14:17): Mr President, I ask a supplementary question. Why is it that eminent Australian economists like Professor Ergas, Professor McKibbin and Dr Fisher, and a range of industry groups— Opposition senators interjecting— The PRESIDENT: Order! Order on my right! Senator Cormann is entitled to be heard in silence. Senator CORMANN: Thank you, Mr President. Why is it that all these economists have not been able to get access to the GTEM model and related datasets and specifications used by Treasury in its carbon tax modelling, even though Treasury— Government senators interjecting— The PRESIDENT: Order! Senator Conroy: Henry Ergas went bankrupt! The PRESIDENT: Order! Senator Conroy! Senator Boswell: Mr President, on a point of order: this is one of the most important questions that could ever be asked and I cannot hear the question. I ask you to get control of this place. The PRESIDENT: Senator Boswell, that is not a point of order. You know that it is not a point of order. If I had the cooperation of both sides of this chamber it would be very helpful indeed, Senator Boswell. Senator CORMANN: Why is it that eminent Australian economists like Professor Ergas, Professor McKibbin and Dr Fisher and a range of industry groups have not been able to get access to the GTEM model and related datasets and specifications used by Treasury in its carbon tax modelling, even though Treasury said in evidence before the Senate Committee on the Scrutiny of New Taxes that access to that model was available through ABARES? The PRESIDENT: Before I call the minister it will help in the setting of the clock if those on my right are quiet during the asking of the question. I am entitled to hear the question; so is the chamber.