![Building bridges: The Queensferry Crossing, across the Firth of Forth near Edinburgh, was completed in 2017 as part of a government investment project worth £1.3bn](https://s.wsj.net/public/resources/images/FN-AI204_FN_BRI_M_20190920081549.jpg)
As we enter the last quarter of 2019 (and of the decade), cyclical indicators point to a slowing world economy amid wide-ranging structural challenges.
There are plenty of issues to keep one up at night, be it climate change, antimicrobial resistance, societal ageing, strained pension and health systems, massive debt levels, and an ongoing trade war.