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How does AI make pictures from words?

Pixel Magic Math
How does AI make pictures from words?
You type "a dragon eating ice cream on the moon" and ~~two seconds later~~ — there it is, painted on your screen. **How

You type "a dragon eating ice cream on the moon" and two seconds later — there it is, painted on your screen. How does the computer do that? It has never seen a dragon eating ice cream on the moon. It has never seen anything at all.

The AI starts with pure noise — a rectangle of random static, like a TV with no signal. Every pixel is a different random color. It looks like colorful confetti exploded across the screen. This mess is the blank canvas.

How was this book?