Written by Bill Polley, Ph.D., Director of Business Intelligence, Quad Cities Chamber
In the days when sailing ships traversed the seas, mariners not only needed to know speed and direction of the wind at their current position, but also what the winds were expected to be later in their journey. The predictability of the wind was essential for reaching one’s destination. Winds that reliably blow in this way were known as “trade winds,” and although the etymology of the term did not originally have to do with international trade in goods, it soon became associated with the constant and predictable winds that made the shipment of goods across oceans, as from Europe to America, possible.
Of course, the wind is not always predictable. Storms appear out of nowhere and threaten to push ships off course. An isolated storm that happens once on a journey is usually not a problem. The captain can plot a correcting course to get back on track. However, if storms are frequent and unpredictable, the additional time and the risk of damage to the vessel could make the journey no longer worth the effort. It may be best to wait until the seas become more predictable again.
Predictability is important in economics as it allows buyers and sellers to form accurate expectations about the future. The level of tariffs and other trade barriers worldwide have been mostly predictable in the post-WWII era with a general trend of gradually lower trade barriers, especially among industrial countries. While exceptions existed for one reason or another, the overall picture was one of stability and predictability.
Recent trade policy announcements have upended the notion of predictability. Changes in tariff levels are no longer the product of lengthy multilateral negotiations, but are instead posted on social media and then modified or paused a few days later. This raises the question of whether there are negative consequences of a less predictable policy environment.