I still think you're still off by two or three orders of magnitude of difficulty. I have no background in plumbing - in fact, as a new homeowner, I just learne

I still think you're still off by two or three orders of magnitude of difficulty. I have no background in plumbing - in fact, as a new homeowner, I just learned what a compression fitting is ($#@%!). I read https://en.wikipedia.org/wiki/Drain-waste-vent_system https://en.wikipedia.org/wiki/Drain-waste-vent_system and... it seems pretty straightforward. I could build this, if perhaps with a few more trips to the hardware store than a professional might make. On the other hand, I work with databases every day. I wrote ROLAP engines in the 90s. And yet this is probably the first time I've ever used the term hierarchical database in a sentence. If you said "here's this hierarchical database, generate a report for me", it would take me some hours to figure out what kind of db it is and how to actually use it. If you asked a layman I think you would get a blank stare. Not to belittle the craft, but there's something intuitive about plumbing. Software is something different.