As 2018 forecast season revs up, the economists at UBS are out with a pretty gloomy assessment considering the booming growth the world has seen this year. Calling the 3.8% global growth pace “a mile wide but an inch deep,” the UBS team lists a number of concerns even as they say global GDP will repeat that growth rate again next year. One factor is that the drivers of the 2017 rebound are “starting to sputter.” Those engines were the Chinese property sector recovery, U.S. shale and the wider commodity rebound that drove recoveries in Brazil and Russia. World Bank/Haver/UBS The dotted line aggregates countries that have more than 40% of their exports in food, energy or metals.via