I guess you're right. Still, in the 1930s, if you owned a car you knew how to quick repair on the road, so you knew a thing or two about the machine. The workin

I guess you're right. Still, in the 1930s, if you owned a car you knew how to quick repair on the road, so you knew a thing or two about the machine. The workings of things we use do get hidden behind veneers over time as the industries around them mature and they become widely used, there is an element of needing to dig, but I'm probably overstating it. If someone wants to learn how to do the complex stuff you're right, it is easier to do so now, but it's less crucial, and having these tools in your life isn't as synonymous with learning how they work as it used to be.