"We highlight five studies which demonstrate that the use of Macintosh-shaped videolaryngoscopes as a training tool to teach direct laryngoscopy is more effective than a standard Macintosh laryngoscope" From Tim Cook Fiona & Lucy Corbett in 𝘈𝘯𝘢𝘦𝘴𝘵𝘩𝘦𝘴𝘪𝘢.