Making the Rule Do the Work
The three key conceptual tools in a studio are the series, the constraint and the system.
Series
A series holds one element fixed and varies another. Monet showed fifteen Meules canvases at Durand-Ruel in May 1891. Twenty Rouen Cathedral paintings followed in 1895.
Fixing the motif makes the shifting light visible. The series is the work; no single canvas carries the argument alone.
Constraint
A constraint is a rule set beforehand that removes routine decisions. It leaves only the essential choices to make.
- On Kawara began the Today series in 1966. Each date painting had to be finished by midnight or destroyed.
- Roman Opalka started in 1965 painting numbers from 1 upwards. In 1972, he began adding one per cent white to each new ground.
System
A system is a constraint that fully enumerates the work.
- Sol LeWitt explored Incomplete Open Cubes in 1974, finding exactly 122 variations.
- Gerhard Richter generated colour charts using mixing rules.
- Combining four hues, three values and two formats yields 4 x 3 x 2 = 24 canvases.
| Tool | What is fixed | What is variable | When it ends |
|---|---|---|---|
| series | Motif or format | One chosen condition | By judgement |
| constraint | A prior rule | What the rule leaves open | By the rule |
| system | Generating procedure | Nothing (enumerable) | When exhausted |
Where the Work Lives
A strict Rule creates interest through human friction. With Opalka and Kawara, human limits meet mechanical rules across decades.
Common pitfall: quietly breaking a rule when it gets inconvenient. If a rule must change, change it explicitly and close the previous set.