Veteran BJP leader Yashwant Sinha today launched a fresh attack on the government, saying Finance Minister Arun Jaitley had not applied his mind while rolling out GST.<br/><br/>Sinha, who served as finance minister in the Atal Bihari Vajpayee government, said demonetisation has not achieved its goal of flushing black money out of the system.<br/><br/>Sinha was speaking with reporters on the sidelines of an event organised by former Bihar speaker Uday Narayan Choudhary on reservation in Patna.'<br/><br/>In his view, "tinkering" with the GST will not serve the purpose, what is needed is a complete overhaul.<br/><br/>Both demonetisation and GST have brought down the pace of the economy, he said.