Good points, helps solidify differences that I had trouble thinking about. But to add, for me I wasn't talking about software, I actually engineered hardware-

Good points, helps solidify differences that I had trouble thinking about. But to add, for me I wasn't talking about software, I actually engineered hardware- in my case, vehicle and airframe structures. Way more direct and less abstract than software. Large software systems may be some of the most difficult examples in the credit tracking problem, for sure.