Let’s build a house.
We don’t know anything about how to build a house. But other people have built houses! How hard can it be?
So to build a house let’s think about houses. We don’t need to actually look at any existing houses because we live in houses. How could you have a more expert opinion than than?
We’ve thought about houses for a while and now we have a fairly comprehensive idea (we think) of what a house should have, all the components and whatnot, written down on a napkin. Done with planning! Next, we build the house.
Now we could hire people who build houses for a living to build this house. We could. But they’re expensive. We could even hire their individual contractors to do the work. But they’re expensive too! Let’s do the whole thing ourselves.
So we start building the house. And progress is slow. But everything seems okay until we hit a snag. The foundations we poured are the wrong kind of concrete and are literally flaking away and falling apart. The concrete mix (which we guessed at, because who has time to read the concrete guide?) needs to be redone. But through process of elimination eventually we arrive at a decent mix that doesn’t fall apart right way, even if it’s not up to any kind of building code. It took quite a long time and was a pain in the ass, but if we ignore opportunity cost we probably (maybe) broke even vs a contractor.
We keep doing this. Each component of the house is slowly, painfully erected. Lots of mistakes. We tear down maybe more than we build. The results are never really satisfactory. Every once in a while a random person walks past and says “hey, why don’t you have an atrium!” or something like that. And we nod sagely. What a good idea! Let’s do it! And we pull out another napkin and go to work.
Eventually, some years, maybe decades later, we arrive at the finished product. It’s definitely a house of sorts. It sprawls more than we’d like, bits are always falling off, it’s unsafe, and not really a pleasure to live in. But it’s our house and we built it.
One day a house builder visits. He takes one look around and says, “This is one of the worst built houses I’ve ever seen!” He gives us some building tips, trying to save us from the inevitable implosion, but we don’t listen. He’s so negative! Why hasn’t he praised our accomplishments instead of harping on our flaws?