Industrial designer and aichmophobic, John Cornock, has designed a kitchen knife with a rounded edge making it almost impossible to stab your relatives during a tedious Christmas dinner. Mr Cornock was inspired to make the knife after watching a documentary in which doctors advocated banning traditional knives. "It can never be a totally safe knife, but the idea is you can't inflict a fatal wound. Nobody could just grab one out of the kitchen drawer and kill someone," Cornock said. The knife will sell for between £40-50.