The TV set has come a long way since the first black and whites, and there’s plenty of road left in the journey

Brian Eno is making magic at Dublin’s RHA gallery. His exhibition, entitled 77 Million Paintings, is mesmerising. In a darkened room, one wall is lit by his projection of ever-changing colour and design. If you sit on one of the sofas, you can lose yourself in the trance-inducing light show.

Eno calls it generative art. “One of the things which strongly draws me to generative art is the idea that the thing is ...