> Two ideas come to mind. First, maybe this is because electricity has gone far beyond "pervasive" into "fully invisible". Second, maybe this is because softwar

> Two ideas come to mind. First, maybe this is because electricity has gone far beyond "pervasive" into "fully invisible". Second, maybe this is because software is inherently more complex and can't be made fully invisible. I think your second point is the correct one. Software eats itself as much as it eats anything else. This is the purpose of compilers and high level languages. To someone coding in a high level language, C code, assembly, and the electronic hardware itself are all reduced to invisible infrastructure. (That's the idea anyway, leaky abstractions notwithstanding). So, I would argue low level software is often already invisible in the sense that it is hidden behind the abstraction of higher level languages or user interfaces. But the definition of "low level" changes as more advanced software is created, so it's forever a moving target.