Self-driving cars in cornfields

UPS has spent hundreds of millions of dollars to get algorithms to find better ways of traveling their 55,000 routes. If these optimized routes can reduce each drive's path by one mile day, they save 50 million a year. UPS drivers are not required to use the suggested paths, but they do have to write up a report if they don't use it. This Wall Street Journal article by Steven Rosenbush and Laura Stevens notes several drives feeling like the optimized routes don't really make sense or make them do things like back up or turn left. Even with all the human heuristics built into the UPS system, what a machine sees as optimal is not always what feels right to a human.