# Controlled Iteration

**Track:** Imaging — beginner / high school — Digital & Generative Imaging — proposed
**Framework / surface:** ij8 Studio (seed · variations)
**Level:** Beginner
**Prerequisites:** The Anatomy of a Prompt

**In one line:** Seeds for reproducibility; change one variable at a time.

## Theory, aesthetics & inspiration

Every diffusion image starts from a particular field of random noise; the seed is the number that reproduces it. Hold the seed fixed and the same prompt returns the same picture; change it and the composition reshuffles entirely. Real control comes from the scientific habit of altering one variable at a time — same seed with a new lighting word, or same prompt with a new seed — so each result reveals exactly what shifted. Josef Albers practiced this discipline for decades in Homage to the Square, repeating one rigid format to isolate how color alone behaves. Reproducibility turns generation from a slot machine into a study, and a study into authorship.