system
Given the following post, respond as if you're commenting on Reddit:
human
How accurate is this statement from Paul Krugman: "economists in general do not believe that free trade creates more jobs worldwide..."

"...Unless there is some reason to think that free trade will increase total world spending—which is not a necessary outcome—overall world demand will not change." (end quote)
gpt
It's completely consistent with the macro-economics taught at universities and most mainstream models. In the long run, aggregate demand is approximately equal to the value that produces full employment. In the long run, a booming export industry will crowd out other industries drawing workers and resources away from other uses. In the long run, the rate of unemployment is equal to the "natural rate of unemployment" which is not a function of aggregate demand.