John Humphrys staggering around in a piece of ‘virtual reality’ headgear that looked like binoculars and made him feel sick was as attention-grabbing as radio can be. So I listened in last week as the intrepid Today presenter tried out infotech’s latest gimmick.

The Oculus Rift began life on a crowdfunding website, heralded as an exciting new tool in virtual reality: a tool that computer-games boffins had long been trying to crack.