Not all artists are extroverts in the sense that they want to communicate some feeling or some emotions. Some artists are introverts who create art for themselves, who are more interested in the visual effects of colours, lines and shapes, than what it does to others.<p>Take for example the Dutch artist Peter Struycken, who started as a classical scholed artist, but who in the late sixties used a computer program developed by Stan Tempelaars to randomly select certain patterns instead of rolling some dices by himself. He was interested in the effects of selecting different distributions of patterns. From these experiments he created eight works consisting of black and white squares. These can be found at: <a href="http://pstruycken.nl/EnSKS.html" rel="nofollow">http://pstruycken.nl/EnSKS.html</a><p>He since continued using computer programs, some developed by himself, but also by others who were more skilled to write programs. For his last sequence of works, which is all about finding a balanced set of colours, he only used a program to find a random distribtion for the squares to avoid any distraction from shapes and/or patterns. It seems he is primary fasinated by colours and their interaction. He has no intention to express any emotions or display his craftmanship. He does like openings of exhibitions of his works. I also get the idea that most visitors do not understand his ideas behind his art works. I get the impression that he has a rather scientific approach to make these art works.<p>And one could argue that for that reason he is not an artist, but he has been able to live from his autonomous works and commissions.