There's a lot of debate about the future of labor in America: Will manufacturing ever come back? Will automation be a job destroyer? Will we all be freelancers working from home, shifting from gig to gig every 6 months?It's all interesting to think about, but if you want to place one solid bet on the future of jobs in America, this chart would be a pretty simple place to start.Regardless of where the economic cycle is, health care jobs just keep going up in a straight line. Image: https://research.stlouisfed.org/fred2/graph/?id=CES6562000101 The chart is even more impressive when you look at healthcare...