Design Principles Unpacked, No. 3: Affordance

Good design doesn’t need a manual. Affordance is about making purpose visible—in objects, interfaces and life. Stand out on purpose.

Every time I see it, it catches my eye. As a designer, I can’t help but notice.

I don’t know if you see this where you’re from, but here, I see pieces of paper taped to doors: “Pull, don’t push.” Or a coffee machine with a post-it next to the button: “Press this first.”

These additions are almost never part of the original design. They appear later as a fix.

Whenever you see extra instructions layered on top of something, it’s usually a sign of poor design. The object didn’t make its purpose clear enough on its own.

In design, we call this affordance.

What Affordance Really Means

Affordance is about perceived purpose. It’s the relationship between an object and the actions it suggests. A handle suggests pulling. A flat plate suggests pushing.

My coffee machine, a Sage, has buttons that light up with LEDs. They highlight which button to press next. Love it! Even my 2-year-old can operate it.

Good affordance doesn’t need explanation. You don’t think. You act.

That’s why well-designed objects don’t rely on manuals. The design itself guides you toward the intended action.

When affordance is clear, usage feels natural. When it isn’t, we compensate with signs, instructions, warnings and rules.

And that’s where things get interesting.

When Design Needs a Manual

The moment you need to explain how something should be used, the design has already failed.

We often accept this in physical spaces and in software too. We’ve learned to live with bad doors, confusing elevators and interfaces full of hints and labels.

But we do something similar with people.

In Dutch, there’s a saying that maybe doesn’t translate perfectly, but the meaning is clear: “That person comes with a manual.” We use it when someone is hard to understand. Hard to work with. You need instructions.

Think about that for a moment. We talk about humans as if they were poorly designed objects that need instructions to function properly.

Affordance Outside of Design

This is where the principle starts to matter beyond design.

Affordance isn’t just about usability. It’s about recognition and understanding. About purpose. It’s about whether others can see what you’re capable of without needing a long explanation.

In work, careers and organizations, we often rely on uniformity to create clarity. Standard resumes, roles and career ladders.

Uniformity creates predictability. But it doesn’t create affordance.

When everyone looks the same on paper, it becomes harder to see what makes someone valuable. The potential of people is unleveraged.

Standing Out on Purpose

Good design sometimes requires contrast. Something has to stand out for affordance to work.

The same applies to people.

If you blend in too well, your affordance disappears. Others can’t see what you’re uniquely good at. Not because you lack value, but because the design doesn’t surface it.

Standing out isn’t about being loud. It’s about being intentional. I often describe this as standing out on purpose.

Not for attention. But for clarity.

When I work with people on career design, the core challenge is rarely skill. It’s visibility. Their purpose isn’t expressed in a way others can recognize.

So we redesign how their value is presented. Not by changing who they are, but by emphasizing purpose. Increase the affordance.

Affordance Is Contextual

Affordance always depends on context.

A door handle that works in one environment might confuse you in another. The same is true for people.

“Just be yourself” sounds good, but it ignores the environment you’re operating in. Affordance isn’t about self-expression in isolation. It’s about how your purpose is perceived within context.

Good design finds that symbiosis. Clear, functional and purposeful.

Takeaways

Affordance teaches us something simple but powerful: If people constantly need instructions to understand you, it’s worth asking whether your affordance is clear.

Not to conform yourself. But to present your value.

Good design reduces the need for explanation. In objects. In interfaces. And in life.

Stand out on purpose.