This is how we lay track today.
This is how we laid track not that long ago. This changed is called increased productivity, and required the loss of LOTS of jobs.
Trump, Hillary, if you really think we need to keep every technology eliminated job. Why not go back to this? Please explain in detail.
The fear of technological change is old, the benefits are not, and they are huge. There are no good arguments for retaining these horrible jobs, just because . . .