Conference nightmares. The many faces of scientific presentations (LabLit.com) – “Prof “Defeated by technology” provides good entertainment. … I remember well giving a talk at the Hammersmith Hospital in the early days of PowerPoint when, after loading the talk onto their computer, a message came up on the screen saying your talk is being modified by the MRC system. All my demure bullet point diamonds were changed to cheeky TV screens, thereby sweeping aside any gravitas I might have had. My favourite technology nightmare, however, comes from pre-PowerPoint days, back when slides were being used in a carousel projector. One presenter could not get the carousel to work and she was told to turn the carousel over and look underneath. She did this but forgot there was no lid on the carousel. She spent the next ten minutes reassembling her talk from the random pile of slides on the floor while the audience shuffled nervously and some escaped to the bar.”