Writers have also changed their minds over time. In the 2000s "ABC Warriors" stories, there is no attempt at fitting the Volgan War into Dredd's timeline or "Harlem Heroes" (but he does refer to "Nemesis The Warlock" in "Dredd: Blood of Satanus II", in order to declare "Satanus Unchained" out of canon). Other writers have also made no mention of this, and generally do not link up non-Dredd strips. It is also a habit of writers who created a strip to ignore the work of others if they feel like it. The John Wagner story "Origins" refers to Pat Mills' "Dredd" stories but makes no attempt to acknowledge "Invasion!", "ABC Warriors", and "Ro-Busters" (or "Harlem Heroes"); "The Life and Death of Johnny Alpha" acknowledges and retcons his death under Alan Grant, but deliberately erases "Strontium Dogs" (with a narrator calling Peter Hogan's strips the work of "notorious fantasist Ho Gan"). In the sequel series "Savage", Mills acknowledges the original "Invasion!" (to the extent that there's a King Charles III in the 2000s, just as prog 1 said) but ignores the prequel strip "Disaster 1990!". And while "Harlem Heroes" was linked to "Dredd", the sequel strip "Inferno" was left separate until Al Ewing's "Dredd Year One: Wear Iron" novella.