Although the field of ‘art and science’ – the fusion of art, science and technology – has existed for at least two decades, its validity and value are still questioned, often very forcefully, by both the artistic and scientific communities. This talk will examine some of the arguments both for and against art and science, drawing on material from Tesla, the open discussion forum on art and science at UCL Computer Science Department, and Fugue, Tesla’s first project. Perhaps some of the questions will be answered; however, it is equally likely that some new ones will be asked.