"For better or worse, I've become the person the Adams Estate has entrusted to guide Dirk Gently into new mediums and to new audiences. I take that responsibility pretty seriously, which is, I'm guessing, where Ilias's comment about me being a "hands-on collaborator" (code for control freak) comment comes from."
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Source : "Nailed It!: David and Kyriazis on 'Dirk Gently's Holistic Detective Agency'". Interview with Keith Silva, comicsbulletin.com. March 8, 2016.