IPG Mediabrands has predicted a 12.1 percent growth rate for the advertising industry in 2018. Some time back, Dentsu had projected an almost similar forecast of 12.2 percent and Zenith Optimedia, on the contrary, went as low as 8.4 percent ad spend growth. Should the advertising industry finally get ready to great year ahead? We talk to the big boss of IPG Mediabrands India - Shashi Sinha.