Parameterized randomness lets artists control how much chance enters a system via explicit ranges

Rather than switching between ‘fully deterministic’ and ‘fully random,’ practitioners define randomness through bounded parameters: a minimum/maximum scale, a rotation range, a probability weight. Each parameter gives the artist direct leverage over the degree of variation. For the Chronograph commission, Reas and Rosner defined data fields such as ‘scale between 0.25 and 0.75’ and ‘angle 0–360’ so every composition was unique but remained within intended visual territory. This separates two decisions: (1) which parameters are variable, and (2) over what range. Novices often treat randomness as binary; experienced practitioners think in terms of continuous dials with meaningful extremes.

Examples

Reas’s Chronograph system let them set per-parameter min/max values, so 365 unique compositions shared a family resemblance. The 10-PRINT weighting demo showed a biased coin (tails 9× more likely) producing a different visual density.

Assessment

Design a small generative sketch with at least three independently parameterized random values. Run it at parameter extremes and explain what breaks and what stays coherent.