The last seven posts weren't a design course. They were an eye exam.
You didn't learn to design furniture. You learned to look at it the way someone who designs furniture looks at it. That's a different skill, and for most of us it's the more useful one. A designer builds vocabulary from nothing. You took a shortcut: categories first, intuition second.
You know what proportion does now. You know a leg says more than "support." You know what a case base argues about its relationship to the floor, what an overhang does to the reading of a top, what grain figure and sheen say about where attention should land, what a detail says about whether the maker was thinking or just finishing up. That's the vocabulary. Here's what you do with it.
Three Questions
Any piece of furniture, whether it's a plan you're about to cut, a photo in a magazine, or a chair you've sat in for fifteen years, answers to three questions. They work in order. Don't skip ahead.
What is the proportion doing?
Step back. See the piece as a mass before you see it as parts. Heavy or light? Grounded or floating? Wide or tall? You could measure the answer. But you feel it first.
A top that's too thick makes the whole piece press down. Too thin and it reads unfinished, like something's missing. A leg taper that ends below 40% of its starting width looks fragile. Above 65% looks blunt. You don't need a calculator to feel these things. But now you know where to look when something feels off.
If the proportion is wrong, stop. No detail, no matter how beautifully executed, saves a piece that doesn't hold in space.
What is each element saying, and do the elements agree?
Proportion reads the piece whole. This question reads the parts in conversation.
The leg has a vocabulary. The case has one. The top, the surface, the details. Each makes a statement. The question is whether those statements are in the same language.
An inset tapered leg says mid-century. A bullnose edge profile says colonial. Put them on the same table and neither one can finish its sentence. This isn't a rule against mixing traditions. It's a question about whether the mix is on purpose. A piece can speak two languages if it knows it's doing it.
Here's the fast diagnostic: find the most expressive element. On a table, that's usually the leg. On a case piece, the base. Ask what tradition it speaks. Then check every other element against that answer. Not "does it match?" but "does it belong to the same conversation?"
What is the piece asking of the person who lives with it?
This is the question that separates design from decoration.
Some furniture commands a room. Some supports it. Some disappears into it, earning its place by not asking for attention. None of these is wrong. They're different intentions. But most furniture doesn't have an intention. It just has dimensions.
When you look at a piece that works, a piece that earns its place regardless of the room around it, you're seeing a clear answer to this question. The piece knows what it's asking. It asks consistently, through every decision from proportion to edge treatment.
What to Do With a Plan
Most of the time you won't be evaluating a finished piece. You'll be staring at a plan.
The process is identical, with one catch: you have to imagine what the drawing will become. Dimensions on paper don't have weight.
The single most useful thing you can do before cutting anything: sketch it at scale, then look at it from ten feet away. Proportions hold or they don't. If they don't hold in a sketch, they won't hold in walnut.
Then walk the three questions. Proportion, agreement, intention. If you can answer all three clearly, build it. If any answer is "I'm not sure," that uncertainty is worth five minutes of thought before the first cut. Not five hours. Five minutes.
What Seven Posts Built
Proportion gave you the math that precedes aesthetics. The Leg gave you the primary expressive element and how to read it. The Case gave you two design languages and what the base says about groundedness. The Top gave you overhang, thickness, and edge treatment as designed decisions. The Surface gave you grain and finish as tools, not afterthoughts. The Detail gave you the territory where design either confirms itself or falls apart.
And this post gave you the three questions that hold all of it together.
The craft tells you how to make something last. The design tells you what's worth making.
Now you can tell the difference.