I urge the author to never look into building a physical building. The codes and amount of work you have to do to legally start are already complicated.

But then you start buying screws and realize the entire screw isle at building supply store is bigger than many small grocers. And probably isn't complete. Heaven help you if you want to do something aesthetically pleasing like a pocket door.

Or, far worse, heaven help you if you want to fix a pocket door. Finding a compatible wheel mechanism is usually most easily done with, "rip it out and use a new mechanism."

Then there is car maintenance. Check engine light says something about the eco subsystem isn't working right? Here is a book mechanics use that list the common reasons for the code. Not standard across makes. Or models, even...

I could probably go on. Point is nothing is greenfield lacking in complexity. I agree we probably could do better with software. But having done embedded work, I think it is easy to be ignorant of exactly how much has to coordinate in a computer system.