Running from 1975 to 1977, the Hinchcliffe era was a perfect and passionate storm, the result of visionary minds pushing against each other to create something they collectively believed in. It is largely because of this era that Doctor Who came to be an icon of science-fiction because it had created the icon of itself with the first three names youd choose in their respective fields behind it. Actor Tom Baker, script editor Robert Holmes and of course, producer Philip Hinchcliffe. As their first story, The Ark in Space, celebrates its fortieth birthday, it would be suitable to honour this golden age with a retrospective of all 16 stories. These stories sought to distance themselves from the outlandish action adventure stylings of the Pertwee years and focus on atmosphere through world building and good acting (which often was the case in this era). These stories ended up being written as a family show sort of. In a letter to Gerry Davies, Robert Holmes said he wouldn't accept episode one of his draft of Revenge of the Cybermen because it wasnt right for their 60% adult audience. This era of the show was so successful it was still considered to have a 60% adult audience in 1985. Its this kind of attention to the atmosphere of the stories that caused this era to be the template of how Doctor Who was written, as well as the cultural template as to how Doctor Who was seen. A model rightfully earned through the sheer skill and dedication of everybody involved. Let's go Fourth!