Michael Craig-Martinis a contemporary conceptual artist and painter. He is noted for his influence over the Young British Artists, many of whom he taught, and for his conceptual artwork, An Oak Tree. The thing that has had the greatest impact on my work has been the computer - I got my first Mac in the early 90s for word processing. Using the cut and paste tool was a dream for me! When I started to do word processing I discovered that the way I constructed text was the same way I constructed my work. I could scan all the separate images that I wanted to assemble on to the computer, which was unbelievably liberating for me. My work process was tediously slow in the past, and the implications of making even the smallest change were immense, but now I can make 1,000 changes and think nothing of doing 100 drawings. Craig-Martin's later works have used a stylised drawing technique often depicting everyday household objects and sometimes incorporating art references, such as objects known from their use in Dada artworks. There is no differentiation in treatment, which consists of black line drawings with lines of equal mechanical width and brightly coloured images, which have been compared to "nursery" colours. The work can be done on canvas with (acrylic) paint or with other methods, such as using black tape to make the lines During the 1990s the focus of his work shifted decisively to painting, with the same range of boldly outlined motifs and luridly vivid color schemes in unexpected combinations applied both to works on canvas, and to increasingly complex installations of wall paintings.