I came expecting - or rather hoping against expectation - more about the design of soups. I like your analogy. And to build on it, I will give an example of a simple soup that just works (at least it gets served for 25 years):
Serve with soup noodles and offer additional flavoring for people who like it spicier.
Note: I am not sure about the units tablespoon and teaspoon; adjust relatively until it tastes.
Related: Key lime pie and the methods of rationality explain across three levels of meta using cooking as the running example. And to another article using a cooking example. Here we have the third one, which proves that all advanced rationality techniques can be explained by cooking.
This includes a rectangular, shiny plastic floor mat, which they placed over the ornate, fine red carpet with the aim of "stopping the carpet from wearing out". They added a pile of cardboard, which now blocks an mahogany bookshelf's carved wooden branches. And a bulbous plastic printer now sits on what was a uncluttered pine table top, with paper boxes splayed around it.
I think this suggests that maintaining your design wasn't practical for them. They need to put their cardboard and printer somewhere (and good luck buying an aesthetic printer). Perhaps the concern about the carpet is silly, but if it really will wear out in a short while then protecting it and maintaining some of the aesthetic value is better than not protecting it and having to buy a replacement before they've actually gotten value out of it.
If you could have re-arranged the room by adding space for their cardboard boxes and printer and protecting them from having to buy a new carpet, then yes they messed up. But if your solution is to get rid of the cardboard boxes and printer and to buy a new carpet in a few years, then your design isn't appropriate for them.
To compare to Gunnar_Zarncke's soup recipe, I wouldn't recommend a meatball soup to a vegetarian, but if I can recommend a soup that can either use meatballs or spicey vegetables, then that's a good recommendation for everyone.
I thought this was interesting. Recently I've been sort of obsessed with design, particularly audio design. Unless you get lucky, or are a savant, it's impossible to just make good things. At least for me. Until I learn the "theory", and have some experience in creating rather than just consuming, I don't seem to really know what I like
I agree with you. You have to design/build a lot of things to develop a design instinct.
In case you find it helpful, one 'executable strategy' to develop a design instinct is making art. This could be sketching your room, painting a picture of a tree in your garden, or making 3D models on Blender. These design activities tend to transfer well to other domains.
(Executable strategy concept: https://notes.andymatuschak.org/Executable_strategy)
Soup design: Everyone likes it, but few know how
Everyone likes good design. But I think that people generally underestimate its importance. Most people don't know how to design, just like most people don't know how to cook.
Design blindness
The key point is that many people have "design blindness". They benefit from good design and suffer from bad design. But they don't realise that: a) design sense is very important (design affects every aspect of your life), b) they don't have a design sense.
This situation makes me think of someone dining at a fine Japanese restaurant. This person can tell that he likes the soup's presentation and taste. But the person has no idea about: a) how to make the food, or b) why he likes the food. If asked why he likes it, the person would say the food "tastes great", or "has a salty flavour".
Regarding interior design, I am currently sitting in a room in a house on the coast of England that I designed over several months. After my changes, I would say that the room had a sense of ordered minimalism. There were few broken visual lines, symmetries, with an emphasis on solid wood and fabric. The room was ordered, uncluttered, and calm.
My family members really liked how the room was after I changed it. Yet that didn't stop them from accidentally making the room into a cluttered mess. Perhaps attracted by the free space, they added items that grate against the room and its furniture. This includes a rectangular, shiny plastic floor mat, which they placed over the ornate, fine red carpet with the aim of "stopping the carpet from wearing out".1 They added a pile of cardboard, which now blocks an mahogany bookshelf's carved wooden branches. And a bulbous plastic printer now sits on what was a uncluttered pine table top, with paper boxes splayed around it.
This design-blindness again reminds me of cooking. Just like an enthusiastic novice chef, a person can keep adding more and more ingredients until the dish's balance is skewed and the soup is much worse than before.
People appreciated the room's design. But, lacking design ability, they changed the room to something that they like less. Everyone appreciates good and bad design. But not everyone can design.
(Cross-posted from my blog: https://www.tomdekan.com/design-blindness)