Sue Lawley's guest this week is Profesor Igor Aleksander. He has been researching artificial conciousness for over 30 years. His first machine, Wisard, could recognise faces. His latest, Magnus, can think. He predicts that soon our computors will be so intelligent we won't be able to switch them off at the end of the day without feeling guilty.

[Taken from the original programme material for this archive edition of Desert Island Discs]

Favourite track: Agnus Dei from Requiem by Giuseppe Verdi