
AARON is a series of computer programs written by artist Harold Cohen that create original artistic images autonomously. The program was developed between 1972 and the 2010s and is one of the longest-running, continually maintained AI systems in history. The name AARON was chosen to start with the letter A so that the names of successive programs could follow it alphabetically. The initial output of the paint system was primitive, with black-and-white drawings that Cohen sometimes coloured by hand. Over time, Cohen modified the program so that it could choose and apply colours itself, resulting in digital prints that are the unmediated work of AARON.
| Characteristics | Values |
|---|---|
| Creator | Harold Cohen |
| Type of Program | AI program for artmaking |
| Development Language | C programming language, then Lisp |
| Development Period | 1972 to 2010s |
| First Use of Term Digital Art | Early 1980s |
| Initial Output | Primitive black-and-white drawings |
| Evolution of Drawings | Abstract drawings in the 1970s, more representational imagery (rocks, plants, people) in the 1980s, return to abstract imagery in color in the 2000s |
| Exhibition History | Tate Gallery in 1983, SFMOMA in 1979, Whitney Museum in 2024 |
| Limitations | Not open source, development ended with Cohen's death in 2016 |
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What You'll Learn

Aaron's evolution from simple shapes to complex figures
The evolution of Aaron, the first digital paint program, from simple shapes to complex figures is a testament to the pioneering work of its creator, Harold Cohen. Aaron's journey began with primitive, black-and-white drawings, often resembling children's drawings or glyphs. These early works were created using a "turtle," a small robot fitted with a marker that moved along the ground.
Over time, Aaron's creations became more complex, progressing from abstract drawings to more representational imagery. In the 1980s, Aaron began to produce real-world shapes, including foliage, plants, and human figures. This was made possible by Cohen's addition of more rules and forms to Aaron's knowledge base.
By the 1990s, Aaron had returned to creating more abstract imagery, but this time in colour. Cohen had modified the program so that it could choose and apply colours independently, resulting in digital prints that were entirely the work of Aaron. This new capability allowed Aaron to create colourful, abstract drawings that differed from Cohen's own abstract paintings, showcasing the program's unique style.
As technology advanced, Aaron continued to evolve, and in the early 2000s, it could create full-colour images and even colour its own drawings using a robotic arm. This marked a significant milestone in Aaron's development, as it could now produce artworks with minimal intervention from Cohen.
Throughout its evolution, Aaron's artistic style progressed from simple shapes and symbols to complex, figurative imagery. This transformation mirrored the artistic journey of its creator, Harold Cohen, who started as a painter and gradually integrated computer programming into his artistic practice. By the end of Cohen's life in 2016, Aaron had come full circle, returning to creating line drawings similar to its earliest versions, showcasing the intricate interplay between artist and machine.
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The role of AI in art
AI in art has come a long way since the development of AARON, the first digital paint program, by artist and engineer Harold Cohen. Cohen's work with AARON represented a unique man-machine collaboration, which became popular with science centres as an area of exploration. Cohen himself described AARON as "not a tool in an orthodox sense", but rather an assistant.
AARON was conceived in the late 1960s at the University of California, San Diego, and named in the early 1970s. It was initially developed in the C programming language and then switched to Lisp in the early 1990s. The program created original artistic images autonomously, evolving from simple pictographic shapes and symbols to more figurative imagery, and eventually full-colour images.
Cohen's goal was to understand what art is by exploring the potential inherent in different programming languages. He wanted to codify the act of drawing and teach a robot to create drawings. AARON's first outputs were primitive black-and-white drawings, which Cohen would sometimes colour by hand. Over time, Cohen modified the program so that it could choose and apply colours independently, resulting in digital prints that were the unmediated work of AARON.
Cohen built his own plotters and painting machines, which interpret commands from a computer to make line drawings on paper with automated pens and add colour with brushes. AARON's images were exhibited at various museums and galleries, including the San Francisco Museum of Modern Art (SFMOMA), the Tate Gallery, and the Whitney Museum.
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Aaron's limitations and its impact on Cohen's work
Aaron, the first digital paint program, was created by Harold Cohen, an artist and pioneer in computer-generated art. Cohen began developing the program in 1971 and worked on it until his death in 2016, making it one of the longest-running AI systems in history.
One of the limitations of Aaron was that it was not able to learn new styles or imagery on its own. Each new capability had to be hand-coded by Cohen. This meant that the program was limited to the rules and forms that Cohen programmed it to follow, rather than being able to adapt and learn independently.
Another limitation was that Aaron was not able to grasp complex concepts in the way that AI can today. It dealt exclusively with internal aspects of human cognition and was limited to a small set of rules and forms that the computer composed into drawings. Cohen acknowledged this limitation, referring to Aaron as an expert system that could follow instructions but lacked the ability to truly understand and create.
The limitations of Aaron had both positive and negative impacts on Cohen's work. On the one hand, the limitations of the program may have restricted the artistic possibilities and hindered the development of more advanced features. On the other hand, Cohen's need to constantly update and modify the program may have stimulated innovation and creativity in his work. Cohen himself acknowledged the evolving nature of his relationship with Aaron, noting how he had changed his approach over time.
Additionally, the limitations of Aaron highlighted the importance of the human element in Cohen's work. As Cohen himself stated, Aaron was not just a tool but more like an assistant. The program's limitations emphasized the role of the artist in guiding and shaping the creative process, even when working with AI. Cohen's reflections on the limitations of Aaron may have influenced his philosophical views on the nature of intelligence and the relationship between humans and machines.
In conclusion, while the limitations of Aaron may have presented technical challenges, they also played a significant role in shaping Cohen's creative process, artistic innovations, and philosophical insights into the human-machine interface.
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Aaron's ability to mimic the external world
Aaron, the first digital paint program, was created by artist Harold Cohen. It was a series of computer programs that created original artistic images autonomously. Cohen began developing the program in 1972, and it is one of the longest-running AI systems in history.
Aaron's early outputs were abstract drawings, which grew more complex over time. In the 1980s, Cohen added more representational imagery, including real-world shapes such as foliage, plants, and human figures. Aaron's knowledge base was expanded with new rules and forms, allowing it to create more detailed and realistic images.
Cohen's goal in creating Aaron was to understand what art is and to explore the creative process through programming. He saw Aaron not as a tool but as a sort of assistant, with its own unique capabilities and limitations. While Aaron could not learn new styles or imagery on its own, Cohen continuously added new features and improved its capabilities as technology advanced.
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The ethical implications of AI art
AI art also presents complicated questions of ownership and copyright. For example, while the terms and conditions for DALL-E 2 stipulate that OpenAI holds the copyright for the images rendered, the users retain ownership of the prompts they enter. This has sparked debates about whether AI should be granted intellectual property rights, with some arguing that AI should serve society rather than hold intellectual ownership. The source material for the machine learning models also comes into play here, as these models are built by scraping images from the internet, often without permission or proper attribution to artists.
AI art has also raised concerns about censorship and the reflection of societal biases. AI systems trained on certain datasets may perpetuate harmful stereotypes and biases, as seen in cases where AI models have associated certain ethnicities with negative or sexualised stereotypes. Additionally, the censorship of certain topics or words by AI art generators, such as politically sensitive issues, further complicates the ethical landscape.
The development and use of AI art generators also intersect with issues of transparency, ethical practices, and fair compensation for artists. Artists must navigate the balance between utilising AI tools for creative advancement while maintaining authenticity and ethical standards. AI art has the potential to maximise artistic expression and efficiency, but it also raises questions about the role of human empathy and creativity in the artistic process.
Lastly, the very definition of art may need to be reevaluated to include media produced by artificial intelligence. AI art challenges the long-held notion that art is solely a human endeavour, a creative expression of human intelligence. As AI art continues to evolve and advance, society will need to grapple with these ethical implications and make difficult choices to navigate the complex relationship between technological innovation and artistic integrity.
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Frequently asked questions
AARON is a series of computer programs written by artist Harold Cohen that create original artistic images autonomously.
AARON was initially programmed using the C programming language, which was later switched to Lisp in the early 1990s. It creates images based on a set of rules and forms, progressing from simple shapes to more complex and representational imagery over time.
AARON creates digital art, including drawings and paintings. The early versions of AARON produced black-and-white abstract drawings, while later versions added colour and more representational imagery, such as rocks, plants, and people.
AARON's artwork has been exhibited at various museums and galleries, including the San Francisco Museum of Modern Art (SFMOMA), the Tate Gallery, the Whitney Museum, and the Victoria and Albert Museum in London.
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