He found the writing process for "The Infinite Vulcan" "unbearable". This was due to interference from Roddenberry, resulting in Koenig producing ten drafts of the screenplay, and because of Koenig's frustration in not otherwise being involved in the series. He could not understand why so many redrafts were required, a view shared by story editor/associate producer D.C. Fontana. Roddenberry was keen in particular to make use of the benefits of an animated medium, by including things which could not have been shown on a live-action series. These included "talking vegetables" as characters, which Koenig said were not his idea but were so silly as to not be worthy of a fight. David Alexander, in his book "Star Trek Creator: The Authorised Biography of Gene Roddenberry", suggested that Koenig was hired to write "The Infinite Vulcan" because Roddenberry felt "bad" about Koenig's exclusion from the series.