Design is not just how it looks; it is how it works, how it breathes, and how it invites the mind to wander. When we talk about "Good Design brings Good Life," we are acknowledging that the tools we use to represent our thoughts actually shape the thoughts themselves.

The Bret Victor School of Thought

Bret Victor has often argued that our current media for thinking is archaic. We are "blind" to our own processes because our tools don't provide immediate feedback or powerful representations. In his essay The Human Representation of Thought, he explores how we can move beyond static symbols to dynamic, interactive systems.

"A tool addresses a human need by amplifying a human capability. An intellectual tool addresses an intellectual need by amplifying an intellectual capability." — Bret Victor

Our typesetting system here is a small step towards that. It is designed to be editorial, clean, and flexible. Let's look at the capabilities.

Image Sizing

Images can be sized according to the importance of the visual. We support four primary sizes: Small (S), Medium (M), Large (L), and Extra Large (XL).

Small (S: 32rem / 512px)

Perfect for icons, small diagrams, or portraits that shouldn't overwhelm the text.

Medium (M: 48rem / 768px)

The standard width for focused diagrams that align with the text block.

Large (L: 64rem / 1024px) - Default

The default for high-quality photos. It breaks the text container slightly for an editorial look.

Extra Large (XL: 80rem / 1280px)

For cinematic, high-impact visuals that span the width of the page.

Mathematical Typesetting

Complex ideas often require precise notation. We use KaTeX for high-performance math rendering.

For instance, the relationship between design and utility could be expressed as:

Where $U$ is total utility, $D$ is design quality, and $E$ is ease of use over time $T$.

We can also do inline math, such as $x^2 + y^2 = r^2$, to keep the flow of the conversation.

Data and Tables

Tables are essential for comparisons. Like images, they can be sized. You can now use prefix markers in the first header cell (e.g., | S: Aspect |) to control the table width.

Code and Implementation

A design system is only as good as its implementation. Our blocks are styled for clarity and ease of reading.

// This is how we handle image sizing in our MDX components
const mdxComponents = {
    img: (props: any) => {
        const { alt, ...rest } = props;
        let sizeClass = "size-l"; // default
        
        if (alt.startsWith("S:")) sizeClass = "size-s";
        else if (alt.startsWith("M:")) sizeClass = "size-m";
        else if (alt.startsWith("XL:")) sizeClass = "size-xl";
        
        return (
            <span className={`block my-8 ${sizeClass}`}>
                <img {...rest} className="w-full rounded-lg" />
            </span>
        );
    }
};

Grouped Sizing (SizedSection)

Sometimes we want to group elements (like a series of paragraphs or a mix of text and images) within a specific width constraint.

Wrapping Up

Typesetting is the architecture of thought. By choosing the right fonts (Playfair Display for headings, Source Sans 3 for body) and the right spacing, we create an environment where ideas can flourish.

Good design brings good life, and good life gives us the space to think the unthinkable.