Mr President, I ask a supplementary question. Were the minister and the Treasurer really unaware that Treasury released its 10-year costings of the RSPT and MRRT revenue estimates under FOI on 14 February 2011 when they made those claims and that those costings show a $60 billion drop in revenue over 10 years? Shouldn't a competent Treasurer and finance minister be aware of those costings, or was the denial that they exist another attempt to mislead the public?